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Dissertations / Theses on the topic 'BHJ solar cell'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

GIRONDA, RAMONA. "Synthesis and characterization of polythiophenes functionalized with electron poor moieties for application in organic electronics." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/40893.

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Harvesting the unlimited and renewable energy from sunlight to produce electricity is one of the major scientific and technological challenges of the 21st century. Among the available techniques, photovoltaic solar cells (PVCs) are very attractive because they can convert solar energy directly into electricity in a reasonable and economic appealing efficiency. The development of PVCs is therefore an attractive alternative to address global environmental issues. However, the current high cost for the devices based on inorganic semiconductors has limited their widespread application. Organic

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2

Cheung, Kai-yin, and 張啓賢. "Metallopolyyne polymers based bulk heterojunction (BHJ) solar cells." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42841719.

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3

Cheung, Kai-yin. "Metallopolyyne polymers based bulk heterojunction (BHJ) solar cells." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42841719.

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4

Quadretti, Debora. "Nuovi polimeri tiofenici per celle fotovoltaiche con architettura BHJ." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16662/.

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Recently, as the fossil fuels strongly decreased, several studies have been conducted in order to exploit solar power as an alternative source of energy. To make this possible with sustainable costs, the attention has been focused on the development of organic photovoltaic solar cells (OPVs) based on polymeric photoactive layer. The aim of this work is to describe the synthesis and characterization of new copolymers, poly[3-(6-fullerenylhexyl)thiophene-co-3-(6-bromohexyl)thiophene], starting from soluble regioregular (PT6BrR) and regiorandom (PT6Br) homopolymeric precursors. These materials ar

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5

Kraft, Thomas. "Ternary blend ink formulations for fabricating organic solar cells via inkjet printing." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0027.

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L’objectif final de la thèse est l'impression de la couche photo-active ternaire d'une cellule solaire organique en utilisant deux approches: l'une concerne l'apport de nanotubes de carbone (SWCNT) pour améliorer les propriétés de transport, l'autre concerne la préparation de mélanges ternaires de matériaux pour contrôler la couleur des cellules. Les encres pour la couche active incluant des SWCNT fonctionnalisés sont composées d’un donneur d'électron (polymère) (poly(3-hexylthiophène), [P3HT]) et d’un accepteur d'électron ( [6,6]-phényl C61-butyrique ester méthylique d'acide [PCBM]) et ont ét

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6

De, Noia Federica. "Sintesi e caratterizzazione di eptameri a base tiofenica con sequenza D-A1-D-A-D-A1-D per applicazioni in BHJ solar cells." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22236/.

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L’interesse della ricerca scientifica sta crescendo sempre più tra i materiali a base tiofenica, spinta dalle loro sorprendenti proprietà funzionali e semiconduttive. Gli oligotiofeni trovano infatti applicazione in molti campi interdisciplinari, in particolare nei dispositivi fotovoltaici organici. In questo studio è stato sintetizzato un nuovo eptamero T7-Bz-TSO2 con sequenza D-A1-D-A-D-A1-D grazie alla reazione di cross-coupling Suzuki-Miyaura catalizzata da un complesso di palladio e assistita da microonde. Questo lavoro si è incentrato sull’introduzione di una nuova unità tiofenica S,S-di

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7

Digrandi, Salvatore. "Sintesi di oligotiofeni “push-pull” per applicazioni in celle solari di tipo bulkheterojunction (BHJ)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19230/.

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8

Limberti, Simone. "Sintesi e caratterizzazione di oligo e politiofeni per applicazioni in elettronica e biodiagnostica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6555/.

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Negli ultimi anni sono stati sintetizzati numerosi oligomeri e polimeri del tiofene che, grazie alle loro proprietà di semiconduttori, hanno trovano largo impiego in molti campi di interesse tecnologico come, ad esempio, transistor ad effetto di campo, diodi elettroluminescenti, dispositivi ottici non lineari e celle fotovoltaiche. Più recentemente, oligomeri tiofenici ossidati allo zolfo hanno trovato applicazione sia in campo elettronico, come materiali accettori in blenda con il poli(3-esiltiofene) (P3HT) usato come materiale donatore, in celle solari di tipo Bulk Hetero Junction (BHJ), m

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9

Fronzi, Daniel. "Nuovi polimeri cationici a base tiofenica per applicazioni fotovoltaiche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14467/.

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In questo progetto di tesi viene presentata la sintesi di due polimeri tiofenici solubili in acqua con caratteristiche interessanti per la costruzione di celle solari “green”: il poli[3-(6-dietilamminoesil)tiofene] (PT6NEt) e il poli[3-(6-pirrolidinilesil)tiofene] (PT6Pir). Il PT6NEt è stato ottenuto per sostituzione nucleofila del precursore PT6Br utilizzando dietilammina in THF come nucleofilo; il successivo trattamento con bromoetano ha permesso di ottenere il sale d’ammonio quaternario. Il PT6Pir è stato ottenuto in maniera analoga, mediante sostituzione nucleofila del Br con pirrolidina o

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10

Dal, Zilio Simone. "Innovative solution in organic photovoltaic devices." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3426627.

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New technologies for photovoltaic energy generation can contribute to environmentally friendly, renewable energy production and may lead to the reduction of carbon dioxide liberated by burning fossil fuels and biomasses. Besides the established silicon based solar cells new photovoltaic technology has gained a lot of interest during the last decade. Among them organic solar cells (OSC) based on conjugated molecules or polymers are promising candidates for the manufacturing of environmentally safe, flexible, lightweight, and inexpensive photovoltaic devices which can be used in low cost applica

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11

Bolognesi, Margherita. "Organic bulk-heterojunction photovoltaic devices: materials, device architectures and interfacial processes." Doctoral thesis, Universitat Rovira i Virgili, 2013. http://hdl.handle.net/10803/128202.

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Research on organic photovoltaic devices (OPV) has developed during the past 30 years, but especially in the last decade it has attracted scientific and economic interest triggered by a rapid increase in power conversion efficiencies. Thanks to the indtroduction of the bulk heterojunction (BHJ) concept, today BHJ OPV efficiencies are exceeding 9%. This thesis gives an overview on the different possible strategies that could be adopted for a further. improvement of BHJ OPV devices performances. The accurate analysis of the chemical, energetic and physical criteria governing the solar cells func

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12

Widmer, Johannes. "Charge transport and energy levels in organic semiconductors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-154918.

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Organic semiconductors are a new key technology for large-area and flexible thin-film electronics. They are deposited as thin films (sub-nanometer to micrometer) on large-area substrates. The technologically most advanced applications are organic light emitting diodes (OLEDs) and organic photovoltaics (OPV). For the improvement of performance and efficiency, correct modeling of the electronic processes in the devices is essential. Reliable characterization and validation of the electronic properties of the materials is simultaneously required for the successful optimization of devices. Further

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13

PAN, TUNG-SHENG, and 潘同昇. "Synthesis of Au/ZnO nanocomposite and its application in P3HT/ZnO BHJ solar cell." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/mhm22j.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>99<br>In this study, bulk heterojunction photovoltaic devices have been fabricated by utilizing a conjugated polymer P3HT as electron donor and self-assembled monolayer (SAM)-modified crystalline ZnO nanorods as electron acceptor. By modifying with different SAMs, the solubility of ZnO can be improved when blending with P3HT in organic solvent such as chlorobenzene, leading to improved solar cells performance. The Jsc can be further increased up to 43.5% upon the modification of ZnO by 61-dicarboxylic acid SAM (C60-SAM). Finally, in order to apply the surface plasmon

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14

Kuo, Ya-Ching, and 郭雅菁. "Investigation of Device Performance and Structures of BHJ Inverted Organic Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/33643145676476365529.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>101<br>Organic polymer solar cells (PSCs) have lots of advantages for low-cost technology , light weight, easy fabrication and have drawn a great deal of attention. In recent years, many research groups are devoted to the study of processing, materials, and device structures. As a result, the PCE increases rapidly in a short time. In this study, we investigate the inverted structure solar cells with zinc oxide as the electron transport layer because of its stability. The ZnO film in our solar devices is deposited by sol-gel technique. Our study shows that more Z

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15

Widmer, Johannes. "Charge transport and energy levels in organic semiconductors." Doctoral thesis, 2013. https://tud.qucosa.de/id/qucosa%3A28350.

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Organic semiconductors are a new key technology for large-area and flexible thin-film electronics. They are deposited as thin films (sub-nanometer to micrometer) on large-area substrates. The technologically most advanced applications are organic light emitting diodes (OLEDs) and organic photovoltaics (OPV). For the improvement of performance and efficiency, correct modeling of the electronic processes in the devices is essential. Reliable characterization and validation of the electronic properties of the materials is simultaneously required for the successful optimization of devices. Further

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