Graphene in photovoltaic applications: organic photovoltaic cells (OPVs) and dye-sensitized solar cells (DSSCs)

2014 ◽  
Vol 2 (31) ◽  
pp. 12136 ◽  
Author(s):  
Dong Wook Chang ◽  
Hyun-Jung Choi ◽  
Alan Filer ◽  
Jong-Beom Baek
2016 ◽  
Vol 37 (2) ◽  
pp. 81
Author(s):  
Ivan Frederico Lupiano Dias ◽  
Dionicio Javier Cardús Chávez ◽  
Manuella Munhoz ◽  
Luiz Carlos Poças ◽  
Marco Aurélio Toledo Da Silva ◽  
...  

A procura de produtos ambientalmente amigáveis, com obtenção a partir de fontes facilmente renováveis e de fácil acesso, menor custo, biodegradáveis, menos agressivos à saúde humana, entre outros, levou ao desenvolvimento de tecnologias empregando corantes naturais. Neste trabalho desenvolve-se uma breve revisão sobre corantes naturais, classificação e procedência, suas propriedades químicas e estruturais e discute-se a aplicação destes corantes em dispositivos como células solares - OPVCs (Organic Photovoltaic Cells), células solares sensibilizadas por corante –DSSCs (Dye Sensitized Solar Cells) e diodos emissores de luz – OLEDs (Organic Light Emitters Diodes) entre várias outras aplicações.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Riccardo Milan ◽  
Gurpreet Singh Selopal ◽  
Marco Cavazzini ◽  
Simonetta Orlandi ◽  
Rita Boaretto ◽  
...  

AbstractSnO2 nanoparticles have been synthesized and used as electron transport material (ETM) in dye sensitized solar cells (DSSCs), featuring two peripherally substituted push-pull zinc phthalocyanines (ZnPcs) bearing electron donating diphenylamine substituents and carboxylic acid anchoring groups as light harvesters. These complexes were designed on the base of previous computational studies suggesting that the integration of secondary amines as donor groups in the structure of unsymmetrical ZnPcs might enhance photovoltaics performances of DSSCs. In the case of TiO2-based devices, this hypothesis has been recently questioned by experimental results. Herein we show that the same holds for SnO2, despite the optimal matching of the optoelectronic characteristics of the synthesized nanoparticles and diphenylamino-substituted ZnPcs, thus confirming that other parameters heavily affect the solar cells performances and should be carefully taken into account when designing materials for photovoltaic applications.


Author(s):  
Prasanth K. Enaganti ◽  
Suraj Soman ◽  
Sabu S. Devan ◽  
Sourava Chandra Pradhan ◽  
Alok Kumar Srivastava ◽  
...  

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Res Jöhr ◽  
Lukasz Zajac ◽  
Gino Günzburger ◽  
Hubert Hug ◽  
Bartosz Such ◽  
...  

AbstractSensitized mesoporous titania is of increasing interest for catalysis and photovoltaic devices such as dye-sensitized solar cells (DSCs). For photovoltaic applications, the catalytic properties of TiO2 can cause degradation of the dyes during device fabrication. This is especially the case if natural sensitizers are used. We addressed this issue by fabrication of carotenoic acid sensitized solar cells under inert and ambient assembly conditions. The DSCs were investigated by currentvoltage and quantum efficiency measurements. Further characterization of the cells was made using impedance spectroscopy. The conversion efficiency of the DSCs prepared under inert conditions improved by at least 25% and the devices showed an enhanced reproducibility. The improvement of the DSCs correlated with the conversion efficiency of the sensitizers under inert conditions. We conclude that the photocatalytic bleaching depends on the electron injection efficiency of the sensitizer. Hence carotenoic acids support their own degradation. However, the photocatalytic decomposition of the sensitizers can be avoided by fabrication of the DSCs under inert conditions.


2016 ◽  
Vol 3 (5) ◽  
pp. 651-662 ◽  
Author(s):  
J. W. Kee ◽  
Y. Y. Ng ◽  
S. A. Kulkarni ◽  
S. K. Muduli ◽  
K. Xu ◽  
...  

Readily synthesized, new bis(arylimino)acenaphthene copper(i) complexes exhibit panchromatic light absorption to the NIR region and function in dye-sensitized solar cells.


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