Relevant bibliographies by topics / ZnO photoanode

Academic literature on the topic 'ZnO photoanode'

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Published: 14 March 2023

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Journal articles on the topic "ZnO photoanode"

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Thor, Shen-Hui, Li-Ngee Ho, Soon-An Ong, Che Zulzikrami Azner Abidin, and Cheng-Yong Heah. "Comparative efficiency study of photoanodes in the photocatalytic fuel cell integrated electro-Fenton hybrid system." IOP Conference Series: Earth and Environmental Science 1135, no. 1 (January 1, 2023): 012006. http://dx.doi.org/10.1088/1755-1315/1135/1/012006.

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Abstract Photoanode in photocatalytic fuel cell (PFC) plays an important role in the dual chamber PFC integrating electro-Fenton (EF) hybrid system (PFC-EF system) since the photo-excitation process on the photoanode will contribute to the electrons for electricity generation and electro-generation of hydrogen peroxide in EF process. Fabrication of different types of photoanodes were carried out by using anodizing and immobilization method, respectively. The fabrication methods significantly affected the efficiencies of photoanodes in the Amaranth treatment. The characterization of the fabricated photoanodes was carried out by X-ray diffraction and scanning electron microscopy. The immobilized ZnO/Zn photoanode achieved the highest degradation efficiencies in both PFC (80.36%) and EF (86.88%). The immobilized ZnO/Zn photoanode also contributed to the highest power density (4.545 μW cm−2).
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Magiswaran, Kaiswariah, Mohd Natashah Norizan, Norsuria Mahmed, Ili Salwani Mohamad, Siti Norhafizah Idris, Mohd Faizul Mohd Sabri, Nowshad Amin, et al. "Controlling the Layer Thickness of Zinc Oxide Photoanode and the Dye-Soaking Time for an Optimal-Efficiency Dye-Sensitized Solar Cell." Coatings 13, no. 1 (December 22, 2022): 20. http://dx.doi.org/10.3390/coatings13010020.

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Dye-sensitized solar cells (DSSCs) were developed by exploiting the photovoltaic effect to convert solar energy into electrical energy. The photoanode layer thickness significantly affects the semiconductor film’s ability to carry electronic charges, adsorb sensitizing dye molecules, and lower the recombination of photo-excited electrons injected into the semiconductor. This study investigated the dependence of the zinc oxide (ZnO) photoanode thin-film thickness and the film soaking time in N719 dye on the photocurrent–voltage characteristics. The ZnO photoanode was applied to glass using the doctor blade method. The thickness was varied by changing the scotch tape layers. The ZnO-based DSSC attained an efficiency of 2.77% with three-layered photoanodes soaked in the dye for three hours, compared to a maximum efficiency of 0.68% that was achieved with three cycles using the dip-coating method in other research. The layer thickness of the ZnO photoanode and its optimal adsorption time for the dye are important parameters that determine the efficiency of the DSSC. Therefore, this work provides important insights to further improve the performance of DSSCs.
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Kim, Kiwon, and Jun Hyuk Moon. "Bismuth Vanadate/Zinc Oxide Heterojunction Electrodes for High Solar Water-Splitting Efficiency at Low Bias Potential." ECS Meeting Abstracts MA2018-01, no. 31 (April 13, 2018): 1894. http://dx.doi.org/10.1149/ma2018-01/31/1894.

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A photoanode exhibiting high water-splitting efficiency at low bias potential is essential for stand-alone water-splitting devices through a tandem system combined with a photovoltaic device. However, many previous studies employing a typical BiVO4/WO3 heterojunctions focused on water oxidation at the maximum thermodynamic water splitting potential, 1.23 V vs. the reversible hydrogen electrode (VRHE). Here, we suggest a strategy for high water oxidation efficiency at low potential using 3D BiVO4/ZnO heterojunction photoanodes. The BiVO4/ZnO heterojunction exhibits a lower onset potential compared to the commonly used WO3 heterojunction. Due to the 3D ordered structure, the BiVO4/ZnO achieves enhanced light harvesting efficiency and improve charge separation efficiency at low bias potential by ZnO heterojunction. As a result, the BiVO4/ZnO photoanode exhibits a water-splitting photocurrent density of 3.3 ± 0.2 mA /cm2 is obtained at 0.6 VRHE under 1 sun illumination.
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Silwal, Surendra Bikram, Rameshwar Adhikari, Prakash Lamichhane, and Netra Lal Bhandari. "Natural dyes as photo-sensitizer in solar cells." BIBECHANA 17 (January 1, 2020): 28–33. http://dx.doi.org/10.3126/bibechana.v17i0.25599.

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The objective of this research is to employ the natural dyes in dye-sensitized solar cell (DSSC). On account of eco-friendly, renewable, and non-hazardous properties of natural dyes over silicon, a semiconductor, photo-sensitizer in conventional solar cells, cyclohexane extract of Terminalia alata, a natural dye, was employed as photo-sensitizer. The photoanodes ZnO and 5% Al-doped ZnO for DSSCs were developed by spray pyrolysis. The X-ray diffraction (XRD) has shown hexagonal wurtzite structure of ZnO with lattice constants a = 3.2487 Å and b = 5.1518 Å having particle size 25.85 nm for ZnO and 33.17 nm for Al-doped ZnO. The DSSC properties such as solar conversion efficiency (η), short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF) were found to be 0.31%, 2.10 mA/cm2, 0.73V, and 45% for ZnO photoanode and 0.37%, 2.25mA/cm2, 0.70 V, and 52.10% for 5% Al-doped photoanode respectively. BIBECHANA 17 (2020) 27-32
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Zhao, Su Qin, Hai Qin Li, Yuan Liang Ma, Yan Ma, Xiao Lei Li, and Hui Ming Ji. "Study of Natural Dye Sensitized Solar Cells with TiO2/ZnO Composite Thin Film as Photoanode." Advanced Materials Research 1058 (November 2014): 248–52. http://dx.doi.org/10.4028/www.scientific.net/amr.1058.248.

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TiO2/ZnO composite thin film was prepared by sequentially spread TiO2and ZnO thin film on the ground layer by layer with sol-gel method respectively. Two different natural dyes (Hehuang safflower yellow pigment and Lycium ruthenicum Murr pigment) were used as sensitizer respectively to sensitize TiO2/ZnO thin film photoanodes and be assembled into solar cells. Dipping time of photoanodes stayed in sensitizer was investigated systematically and the results show that higher photovoltaic conversion efficiency can be obtained with extension of immersing time. The phase structure, crystallinity, morphology and optical property of photoanode were characterized based on XRD, SEM and UV-vis measurements.
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Beedri, Niyamat I., Prashant K. Baviskar, Abhijit T. Supekar, Inamuddin, Sandesh R. Jadkar, and Habib M. Pathan. "Bilayered ZnO/Nb2O5 photoanode for dye sensitized solar cell." International Journal of Modern Physics B 32, no. 19 (July 18, 2018): 1840046. http://dx.doi.org/10.1142/s0217979218400465.

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Nb2O5 layer were deposited on ZnO by using doctor blade method. The preparation of a bilayered ZnO/Nb2O5 photoanode was introduce for dye-sensitized solar cell (DSSC) application. Deposition of Nb2O5 layer on ZnO film improves power conversion efficiency of DSSCs. The ZnO/Nb2O5photoanode-based DSSCs show increase in photocurrent, open circuit voltage and conversion efficiency. The ZnO/Nb2O5 solar cell provides 50 mV increase of open circuit voltage, [Formula: see text] increment in current density and [Formula: see text] increment in efficiency as compare to ZnO-based DSSCs. We further analyzed the electron recombination properties of ZnO and ZnO/Nb2O5 by utilizing electrochemical impedance spectroscopy (EIS). The EIS analysis (Bode Plot) for ZnO/Nb2O5 photoanode show shifting of the peak related to electron recombination towards low frequency as compared to ZnO photoanode. Thus, there is an increase in lifetime of electrons in the ZnO/Nb2O5 photoanode, confirming that the recombination reactions are reduced in ZnO/Nb2O5 photoanode as compared to the ZnO.
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Mohamad, Ili Salwani, Mohd Natashah Norizan, Norsuria Mahmed, Nurnaeimah Jamalullail, Dewi Suriyani Che Halin, Mohd Arif Anuar Mohd Salleh, Andrei Victor Sandu, Madalina Simona Baltatu, and Petrica Vizureanu. "Enhancement of Power Conversion Efficiency with Zinc Oxide as Photoanode and Cyanococcus, Punica granatum L., and Vitis vinifera as Natural Fruit Dyes for Dye-Sensitized Solar Cells." Coatings 12, no. 11 (November 21, 2022): 1781. http://dx.doi.org/10.3390/coatings12111781.

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Ruthenium N719 is a well-known material used as the dye in commercial dye-sensitized solar cell (DSSC) devices. However, it poses risks to human health and the environment over time. On the other hand, titanium dioxide (TiO2) has low electron mobility and high recombination losses when used as a photoanode in this photovoltaic technology device. In addition, using Ruthenium as the dye material harms the environment and human health. As an alternative sensitizer to compensate Ruthenium on two different photoanodes (TiO2 and ZnO), we constructed DSSC devices in this study using three different natural dyes (blueberry, pomegranate, and black grape). In good agreement with the anthocyanin content in the fruits, black grape, with the highest anthocyanin content (450.3 mg/L) compared to other fruit dyes (blueberry—386.6 mg/L and pomegranate—450.3 mg/L), resulted in the highest energy conversion efficiency (3.63%) for the natural dye-based DSSC. Furthermore, this research proved that the electrical performance of natural dye sensitizer in DSSC applications with a ZnO photoanode is better than using hazardous Ru N719 dye with a TiO2 photoanode owing to the advantage of high electron mobility in ZnO.
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Safriani, Lusi. "Pengaruh Penambahan Nanopartikel ZnO Terhadap Morfologi Nanokomposit TiO2/ZnO." Jurnal Ilmu dan Inovasi Fisika 6, no. 2 (August 8, 2022): 182–88. http://dx.doi.org/10.24198/jiif.v6i2.41201.

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The photoanode layer which is generally an oxide semiconductor material plays an important role in dye-sensitized solar cells. Photoanode facilitate electron transfer from dye to external circuit and electron injection from the dye. Photoanode should have a high surface area as well as high pore size to accommodate the dye sensitizer capacity optimally. To improve the function of TiO2-based photoanode, it can be done by adding ZnO nanoparticles. The characterization results showed that the addition of nanoparticles did not change the structure of each component, ZnO had a hexagonal wurtzite structure while TiO2 had a tetragonal structure in the anatase phase. The surface morphology of ZnO, TiO2 and TiO2/ZnO nanocomposites is quite homogeneous with spherical particles. The addition of ZnO nanoparticles affects the specific surface area and pore volume of TiO2/ZnO nanocomposites. Compared to the specific surface area and pore volume of TiO2, the addition of ZnO nanoparticles increased the specific surface area by 68% and the specific pore volume to three times the TiO2 pore volume
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Zhao, Shuaitongze, and Shifeng Xu. "Semiconductor Photoanode Photoelectric Properties of Methanol Fuel Cells." Journal of Nanoelectronics and Optoelectronics 16, no. 1 (January 1, 2021): 72–79. http://dx.doi.org/10.1166/jno.2021.2906.

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One-dimensional TiO2, ZnO, and Fe2O3 nanorod arrays are selected as the photocatalytic methanol fuel cell photoanodes, and a greenhouse catalytic methanol fuel cell device is designed. With the photo-generated holes' participation in fuel molecules' oxidation in the semiconductor electrode, chemical energy is converted into electric energy. Firstly, with pot-doped tin dioxide (TRS) as the substrate, TiO2, ZnO, and Fe2O3 nanorod arrays are prepared by hydrothermal method. TiO2 and ZnO are excellent photoelectric catalytic materials with similar energy band capability and strong separation capability for photo-generated charges in the energy band analysis. With a narrow band gap, Fe2O3 can be oxidized by water with visible light. In the experiment, different anodes' photoelectric properties are tested by the Mott-Schottky equation, cyclic voltammetry, and electrochemical analysis. The results show that the ZnO-based photoanode's maximum short-circuit current can reach 1.86 mA/cm2, and its open-circuit voltage can reach 1.15 V, the ZnO-based photoanode's 0.92 mA/cm2 and 1.36 V, and the Fe2O3-based photoanode's 0.08 mA/cm2 and 1.18 V. Compared with Fe2O3 electrodes, TiO2 and ZnO thin-film electrodes have better photocurrent conversion ability in dark, simulated sunlight, and visible light conditions. Fe2O3 electrodes can also generate strong instantaneous anode photocurrents after irradiation.
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Jiao, Yu, Guang Chao Wang, Feng Rong Li, and Shu Hong Xie. "Efficiency Enhancement of ZnO Nanocrystalline Dye-Sensitized Solar Cells by Post-Treatment." Materials Science Forum 852 (April 2016): 901–7. http://dx.doi.org/10.4028/www.scientific.net/msf.852.901.

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In this paper, ZnO nanocrystalline photoanodes were treated by zinc acetate aqueous solution. The effect of surface chemical modification processing on the photovoltaic performance and electrochemical properties of ZnO nanocrystalline dye-sensitized solar cells (DSSCs) were studied systematically. The SEM results revealed that the surface of the ZnO photoanode films were rough and some aggregations were formed after the surface chemical modification processing. The number of aggregations increased with increasing processing time, and showed wide grain size distribution simultaneously, which effectively increased the light scattering and decreased the grain boundaries to suppress the electron recombination. Moreover, the surface of these photoanode films were filled with micropores, which was benefit to the infiltration of electrolyte solution. The short circuit current density increased from 7.20 mA•cm-2 to 8.61 mA • cm-2 when post-treatment 20 min, and the maximum energy conversion efficiency reached 3.61%, which enhanced 43% compared with that without post-treatment.
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Dissertations / Theses on the topic "ZnO photoanode"

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Williamson, Andrew. "Carrier dynamics, persistent photoconductivity and defect chemistry at zinc oxide photoanodes." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/carrier-dynamics-persistent-photoconductivity-and-defect-chemistry-at-zinc-oxide-photoanodes(ec59e44c-0f17-40e5-ab34-871afbea0ea9).html.

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Zinc oxide (ZnO) is a promising photoanode material which has been used in quantum dot-based depleted heterojunction solar cells. The specific influence of the defect chemistry of ZnO on its n-type conductivity remains a focus for research. This thesis presents results from a series of near-ambient pressure (NAP) XPS experiments (at The University of Manchester, UK), used to characterise surface adsorption of O2 and H2O on ZnO(10-10) surfaces in high pressure environments. Water dosing is shown to lead to surface hydroxylation and a change in the surface band bending consistent with an increase in the surface conductivity. Oxygen dosing is also observed to lead to the formation of surface species on the ZnO surface, revealing that ZnO is prone to hydroxylation even in oxygen-rich environments. The role of surface OH on influencing the transient surface photovoltage (SPV) of the ZnO(10-10) surface is probed through a series of time-resolved, pump-probe XPS experiments (at SOLEIL synchrotron, France). It is shown that increasing the degree of surface hydroxylation leads to a decrease in surface band bending, leading to longer-lived transient SPV. Other factors influencing the SPV dynamics are explored, such as the role of the oxygen vacancy concentration. The transient SPV decay lifetime is shown to increase with increasing oxygen vacancy concentration, consistent with the presence of persistent photoconductivity (PPC) in ZnO, mediated by oxygen vacancy-related hole traps. The influence of the concentration of thermally excited carriers in ZnO on the surface band bending is also described, showing that the equilibrium band bending and the surface photovoltage are both reduced at low temperature. It is shown that thermal excitation of carriers from the valence band of ZnO and from neutral oxygen vacancies have negligible influence on the magnitude of equilibrium band bending at the surface. The energy regime consistent with the observed temperature dependence is also consistent with a perturbed-host state 0.2 eV below the conduction band minimum. This meta-stable state is associated with doubly-ionised oxygen vacancies, that mediate the PPC in ZnO. However this does not rule out the contribution from other shallow donor levels such as those associated with hydrogen impurities. The influence of hydrogen on the SPV dynamics in ZnO is explored, through angle-resolved photoemission spectroscopy (ARPES) after implanting hydrogen atoms into the ZnO surface. H implantation is shown to lead to the formation of a 2D electron gas (2DEG) at the surface, consistent with an increase in conductivity at the surface large enough to change the nature of the space-charge region at the ZnO surface from depletion to accumulation.
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Shih, Li-Chi, and 施力綺. "Fabrication of ZnO Composite Photoanode on Dye Sensitized Solar Cell." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ecvq72.

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碩士
國立虎尾科技大學
電子工程系碩士班
103
In this study, we prepared low-density zinc oxide micron rods (MRs) on the non-seed layer ITO/PEN by hydrothermal. The analyses of field emission scanning electron microscopy show that the average length of the zinc oxide micron rods is 14μm, then used the scraper method to fill the ZnO nanoparticles into the micron rods to prepare the photoelectrode. Zinc oxide micron rods (NPs/MRs) composite electrode was pressed under 418kg / cm2 through mechanical pressure, these improvements are attributed to the multiple functions of the composite structure, including large surface area for sufficient dye adsorption, micron rods for efficient light scattering, and one-dimensional building units for longer electron lifetime. Light-scattering layer can effectively increase the traveling path of incident light, thereby increasing the collision probability between the incident light and the zinc oxide nanoparticles. The zinc oxide nanoparticles film can absorb dye to enhance the photocurrent, therefore zinc oxide micron rods (NPs/MRs) composite structures can effectively enhance the overall dye-sensitized solar cell photocurrent conversion efficiency. From the analysis, with the thickness of zinc oxide film increase, the optical properties will also increase. This is mainly due to the amount of the dye adsorption, when the thickness of the zinc oxide film increase, the dye adsorption will also increase, after illumination, the dye excited electrons increase, this result indicates that the resistivity decrease. From this research, we press and analysis the zinc oxide particles film under mechanical pressure, we found that under 418.8kg/cm2 mechanical pressure the ZnO film achieve the thickness of 33.0μm. After immersed the D149 dye has the best conversion efficiency for dye-sensitized solar cells (DSSCs), which is 2.90%. This result will come up with the best mechanical pressure and thickness of the film then applied to the composite electrode. In order to prepare the composite structure of DSSCs, we use different growth temperature and different time to prepare ZnO micron rods. The growth temperature not only affects the crystalline of zinc oxide, but also improves the surface morphology of the electrode, and different growth time will affect the length of zinc oxide by hydrothermal. The best photoelectric conversion efficiency was found to be 3.46% with the composite structures.
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Huang, Po-Yung, and 黃博雍. "ZnO Nanowires as Photoanode Material for Quasi-Solid State Dye-Sensitized Solar Cells." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/84632239284917085296.

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碩士
國立清華大學
材料科學工程學系
98
In recent years, much attention has been paid to the development of dye-sensitized solar cells (DSCs) because of their low production cost. In this study, the growth of well-aligned single-crystalline ZnO nanowires (NWs) is realized on bare transparent conductive oxide (TCO) glass substrates by thermal evaporation. Although the NWs provide a good electron transport path, the surface area of the NWs is too small for dye loading. In this study, additional ZnO NWs for backbones of branched NWs were added and a secondary growth was introduced to raise the surface area of the photoanode and enhance the light scattering effect. The Short-circuit current density(JSC) was improved to 5.38 mA/cm2 for the branched NW photoanode from 4.07 mA/cm2 for the bare NW photoanode. The highest conversion efficiency and the fill factor were around 1.57% and 0.50, respectively. On the other hand, liquid electrolytes are usually used in DSCs, rendering leakage and evaporation problems. To solve these problems, solid-state hole transporters, whether organic or inorganic, polymer electrolytes and gel polymer electrolytes have been used to replace liquid electrolytes in many reports. A gel electrolyte with good contact, reasonable conductivity, ease of fabrication, was prepared to make quasi-solid state DSCs. The highest efficiency of 0.7% and the fill factor of 0.54 have been achieved. In comparison with DSCs with liquid electrolytes, the relative low JSC and the efficiency are due to the lower ion diffusion velocity.
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Chong, Wen-Jie, and 鍾文介. "Novel Fabrication of Al Doping ZnO Composite Photoanode for Dye Sensitized Solar Cell." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/wft272.

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碩士
國立虎尾科技大學
電子工程系碩士班
101
In this study, the composite photo-anode of TiO2 nanoparticles (NPs) and Al-doped ZnO microrods (MRs) was fabricated on fluorine-doped tin oxide (FTO) glass. Al-doped ZnO MRs, length of ~10 μm, grown by hydrothermal method on free seed FTO glass, followed by Doctor blade of TiO2 NPs (diameter of 25 nm), on the MRs surface. The columnar structure of ZnO MRs as a light scattering layer and a channel for transmit rapidly the photoelectron. Light scattering layer can increase the path length of the incident light and enhances the collided probability between the incident light and TiO2 NPs. TiO2 NPs has large surface area to absorb dye and thus enhance the light current. Therefore, TiO2 NPs and ZnO MRs composite photo-anode can enhance the features of dye-sensitized solar cells (DSSCs). Al-doped ZnO microrods arrays with the Al contents in the region of 2.5%-50% were prepared and evaluated as photoanodes for DSSCs. It was found that Al-doping has changed not only electrical properties but also the morphology and structure of the ZnO microrods. to improve the electrode surface morphology, aluminum ion can embed and enhance the electronic conductivity of materials surface polarity, so that microrods electrode to increase the adsorp Hydrothermal growth of Al/Zn 20% microrods increased body surface area, the length of electrode from 4 μm to 9 μm, radius of electrode from 0.5 μm to 1 μm and the short-circuit current of up to 14.72 mA/cm2 from 19.91 mA/cm2. The diameter of the ZnO microrods also changes with the addition of Al. Our results indicate that an appropriate increase in the diameter of the nanorods is favorable due to the reduction in electron transport resistance, which further speeds up electron transport in the ZnO microrods arrays leading to the increase of short-circuit current. In the electrical measurement analysis, when the Al/ZnO of 20% shows the best electrically and also showed the highest zinc oxide dye-sensitized solar cell efficiency of 8.20%.
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Yin, Yu-Tung, and 殷瑀彤. "Development of high power conversion efficiency ZnO-based photoanode to the application of dye-sensitized solar cell." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/30720898371699348934.

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博士
國立臺灣科技大學
化學工程系
104
In this study, the growth mechanism of ZnO nanowire arrays (ZnO-NWAs) via chemical solution method under different additives, such as: polyethylenimine (PEI) and ammonia (NH3), has been investigated. By using photoluminescence spectroscopy (PL) and X-ray absorption spectroscopy (XAS), the relation between PL emissions, interstitial zinc defects (Zni) interstitial oxygen defects (Oi) has been investigated. To further improve the quality of ZnO-NWAs, unlike the conventional batch process, a facile continuous flow injection (CFI) process has been conducted to synthesize high-quality ZnO-NAWs. According to the study, the concentration of zinc precursor can be maintained at a constant level in CFI process to provide a steady-state growth environment. High quality and long length ZnO-NWAs can be obtained from CFI process to be the photoanode of ZnO based dye-sensitized solar cells (DSSCs). From the results, the increment of length of ZnO-NWAs could effectively improve the dye absorption amount; however, it also influenced the electron collection efficiency (ηCC). To effectively increase the power conversion efficiency (PCE) of DSSCs with long ZnO-NWAs, the diffusion coefficient (Dn) need to improve simultaneously. In this study, NH3 was added into the chemical solution process and it could effectively reduce the surface defects and increase the diffusion coefficient achieved 1.2x10-2 cm2s-1, which was investigated by Raman spectroscopy and electrochemical impedance spectroscopy (EIS) techniques. ZnO-NWAs with length of 55 μm was synthesized via NH3-assised CFI process to use as photoanode of DSSCs and the PCE achieved 3.92 %. To improve the performance of ZnO-based DSSCs furthermore, a low temperature chemical bath deposition (CBD) was employed to decorate ZnO nanoparticles (ZnO-NPs) on the surfaces of ZnO-NWAs photoanodes for increasing dye loading amount. The PCE of ZnO-NWAs/NPs composite DSSC could achieve 5.25 % under the thickness of 13.5 μm. When the thickness of ZnO-NWAs/NPs composite photoanode increased to 26.2 %, the PCE could achieve 7.53 %, which is the highest value in this study. Finally, we also studied the influence of photoanode surface treatment on the performance of DSSCs. In this study, 4-tert-butylpyridine (t-BP) and water vapor were employed as surface modifier. According to the results, the excess dye molecules could be removed by t-BP treatment to avoid the multilayer adsorption and the carrier transport/transfer properties could effectively be improved by water vapor. The PCE could enhanced from 5.25 % to 6.59% via t-BP and water vapor treatment under the photoanode thickness of 13.5 μm.
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Lu, Yen-Wei, and 陸彥瑋. "Preparation of ZnO Nanocrystallite Aggregates for Photoanodes of Dye-Sensitized Solar Cells." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6qzbhz.

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碩士
國立臺北科技大學
有機高分子研究所
104
In this study, a green aqueous solution method was developed to synthesize a family of ZnO nanocrystallite aggregates, whose morphology was determined by the amount of L-histidine introduced into the reaction mixture. The resulting ZnO nanocrystallite aggregates were used to construct single-layered photoanodes for dye-sensitized solar cells (DSSCs) to investigate the effects of aggregate morphology on the photovoltaic performance of DSSCs. The best performing cells were those constructed from spherical nanocrystallite aggregates approximately 400 nm in diameter, obtained by adding 6.45 mM of histidine into the reaction mixture. The highest power conversion efficiency achieved was 4.52%, a 32% improvement over the efficiency attained by devices constructed from commercial ZnO nanoparticles. To enhance the cell efficiency even further, double-layered photoanodes were fabricated using the 400 nm spherical aggregates as a scattering layer and the commercial ZnO nanoparticles as the underlayer. DSSCs based the double-layered photoanodes achieved a power conversion efficiency of 4.93%.
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Chou, Chen-Yu, and 周振宇. "Quantum Dot-sensitized Solar Cells: Investigation on Polystyrene-templated TiO2 and ZnO Nanowire/Nanoparticle Photoanodes." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/01485100837331033424.

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Kuan-WenLin and 林冠文. "Preparation of ZnS/CdS/TiO2 Photoanodes and Application in Photoelectrochemical Hydrogen Production." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/89859285986145749751.

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碩士
國立成功大學
化學工程學系碩博士班
100
In this work, ZnS/CdS/TiO2 photoanodes were prepared by pulse electrodeposition from zinc chloride and sodium thiosulfate solutions. The influence of the electrodeposition condition on the composition and structure of photoanode was investgated. Furthermore, the photoelectrochemical activities and hydrogen production rates of the photoanodes were also studied. For the study of ZnS electrodeposition, the preparation conditions including applied voltage, electrolyte composition, pH, input electricity, deposition temperature, and calcination temperature were investigated. The characterizations of photoanodes were investigated by means of XRD, SEM, TEM, XPS and UV techniques. In order to measure the photoactivity of prepared photoanode, a photoelectrochemical (PEC) cell with an electrolyte of 0.25 M Na2S and 0.35 M Na2SO3 were used under illumination by Xe lamp (100 mW/cm2). Moreover, the hydrogen generation experiment was carried out in a two-compartment PEC reactor. The concentration of alkaline electrolyte and the stirring rate in the anode compartment were investigated as well. The results showed that deposition amount, particle size, defects, and surface charges of ZnS layer were strongly influenced by the deposition conditions, which would in advance manipulate the photoactivity of photoanode. It was found that the optimal deposition conditions were: reductive voltage of -0.8 V (vs. Ag/AgCl), the electrolyte of 0.03 M ZnCl2, 0.3 M Na2S2O3, pH3, input reductive electricity of 1 C, deposition temperature of 25 ℃ and calcination temperature of 300 ℃. From the results of hydrogen genetation experiment, it revealed that the hydrogen generation condition was optimized at rotating speed of 300 rpm and the electrolyte of 1 M NaOH, 0.35 M Na2SO3 and 0.25 M Na2S. When the ZnS/CdS/TiO2 photoanode equipped with the PEC cell were operated at the optimal conditions, a maximum photocurrent density (8.17 mA/cm2) and photoconversion efficiency (3.56%) could be achieved. Moreover, the hydrogen generation rate reached to 87.98 mol/cm2-h with a long-term stability. As compared with CdS/TiO2 photoanode, the studied ZnS/CdS/TiO2 photoanode exhibited not only a promotion in photoactivity but also an increase in the hydrogen production rate. The lifetime of photoanode was increased as well, owing to the reduction in photocorrosion of photoanode.
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Chen, Po Yen, and 陳柏諺. "The study of Photoelectrochemical Reaction in salt-water splitting using p-type Cu-Zn-Sn-S photocathode/n-type Ag-In-S photoanode system." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107CGU05063025%22.&searchmode=basic.

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Book chapters on the topic "ZnO photoanode"

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Hung, I.-Ming, Jing-Ru Chen, and Yi-Hung Wang. "Characterization and Performance of Li-ZnO Nanofiber and Nanoforest Photoanodes for Dye-Sensitized Solar Cells." In Green Energy Materials Handbook, 253–67. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, [2019]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429466281-13.

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Conference papers on the topic "ZnO photoanode"

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Fatima, M. J. Jabeen, C. V. Niveditha, and S. Sindhu. "Novel Bi2O3-ZnO solid solutions as photoanode in DSSC." In THE 3RD INTERNATIONAL CONFERENCE ON OPTOELECTRONIC AND NANO MATERIALS FOR ADVANCED TECHNOLOGY (icONMAT 2019). Author(s), 2019. http://dx.doi.org/10.1063/1.5093863.

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Khan, Seema, Asif Jamil Ansari, and Safia Akhtar Kazmi. "ZnO-rGO-Ag Photoanode for Dye-sensitized Solar cells." In 2022 2nd International Conference on Emerging Frontiers in Electrical and Electronic Technologies (ICEFEET). IEEE, 2022. http://dx.doi.org/10.1109/icefeet51821.2022.9848280.

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Timuda, Gerald E., Muchtazar Y. Ihza, Bambang Hermanto, Christina Aprilia, Deni S. Khaerudini, Haryo S. Oktaviano, and Muhammad Aziz. "ZnO with spiked-nanosheet structure as photoanode for photoelectrochemical water splitting." In THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIAL AND TECHNOLOGY (ICAMT) 2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0106287.

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Yao, Jimmy, Chih-Min Lin, and Stuart (. Yin. "Density-controlled ZnO/TiO2nanocomposite photoanode for improving dye-sensitized solar cells performance." In SPIE OPTO, edited by Alexandre Freundlich, Jean-François Guillemoles, and Masakazu Sugiyama. SPIE, 2015. http://dx.doi.org/10.1117/12.2085268.

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Arifin, Zainal, Syamsul Hadi, Hanung Nugroho Jati, Singgih Dwi Prasetyo, and Suyitno. "Effect of electrospinning distance to fabricate ZnO nanofiber as photoanode of dye-sensitized solar cells." In THE 5TH INTERNATIONAL CONFERENCE ON INDUSTRIAL, MECHANICAL, ELECTRICAL, AND CHEMICAL ENGINEERING 2019 (ICIMECE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000705.

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Lam, Sze-Mun, Jin-Chung Sin, and Honghu Zeng. "Sunlight-driven photocatalytic fuel cell with WO3/rod-like ZnO/Zn photoanode for food wastewater treatment and electricity production." In INTERNATIONAL CONFERENCE ON BIOENGINEERING AND TECHNOLOGY (IConBET2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0078440.

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Gan, Y. K., N. F. Zakaria, I. S. Mohamad, and M. N. Norizan. "The effect of ZnO photoanode solution ageing to the performance of dye-sensitized solar cell (DSSC)." In THE 2ND INTERNATIONAL CONFERENCE ON APPLIED PHOTONICS AND ELECTRONICS 2019 (InCAPE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/1.5142140.

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Khusaini, Muhammad Zuhdi, Hanung Nugroho Jati, Suyitno, Syamsul Hadi, and Zainal Arifin. "The influence of electrospinning flow rate parameter on ZnO nanofiber as photoanode of dye-sensitized solar cell." In THE 5TH INTERNATIONAL CONFERENCE ON INDUSTRIAL, MECHANICAL, ELECTRICAL, AND CHEMICAL ENGINEERING 2019 (ICIMECE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000702.

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Bavir, Mohammad, Ali Fattah, and Amir Ali Nazari. "An investigation of electrochemical impedance of TiO2-ZnO composite and TiO2-graphene composite in dye-sensitized solar cells, as photoanode." In 2015 30th International Power System Conference (PSC). IEEE, 2015. http://dx.doi.org/10.1109/ipsc.2015.7827768.

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Goel, Mohit, and Tanu Mittal. "ZnO Nanostructures Based Photoanodes: Potential Applications in Dye Sensitized Solar Cells." In 2018 International Conference on Intelligent Circuits and Systems (ICICS). IEEE, 2018. http://dx.doi.org/10.1109/icics.2018.00018.

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