Design of organic small molecules for photovoltaic application with high open-circuit voltage (Voc)

2019 ◽  
Vol 7 (9) ◽  
pp. 2487-2521 ◽  
Author(s):  
Xiaodong He ◽  
Lunxiang Yin ◽  
Yanqin Li
Keyword(s):  
Small Molecules ◽  
Open Circuit Voltage ◽  
Molecular Design ◽  
Open Circuit ◽  
Efficient Approach ◽  
Photovoltaic Application ◽  
Photovoltaic Materials

An efficient approach to improve Voc values for OSCs through molecular design and modification of photovoltaic materials was summarized and discussed.

Effect of Interface States on the Open-Circuit Volatage in a-Si:H/c-Si Heterojunction Solar Cells

2012 ◽  
Vol 485 ◽  
pp. 454-456
Author(s):  
Lan E Luo ◽  
Chun Liang Zhong
Keyword(s):  
Open Circuit Voltage ◽  
Minority Carrier ◽  
Interface States ◽  
Open Circuit ◽  
Band Offset ◽  
Heterojunction Solar Cells ◽  
Conduction Band Offset ◽  
Photovoltaic Application ◽  
Critical Issues ◽  
Recombination Centers

The properties of the a-Si:H/c-Si interface are one of the critical issues for the photovoltaic application. The effects of the interface states on the open-circuit voltage VOC were performed by a set of simulations. VOC decreases with Dit increasing, especially at high values of Dit, since the interface states act as recombination centers to decrease the excess minority carrier density in c-Si. Since the conduction band offset ∆EC can saturate part of interface states, VOC increasing with ∆EC increasing.

Carbazole-based small molecules for vacuum-deposited organic photovoltaic devices with open-circuit voltage exceeding 1 V

2017 ◽  
Vol 47 ◽  
pp. 162-173 ◽  
Author(s):  
Yuan Jay Chang ◽  
Jung-Lien Hsu ◽  
Yi-Hua Li ◽  
Sajal Biring ◽  
Tzu-Hung Yeh ◽  
...  
Keyword(s):  
Small Molecules ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

Defect passivation by alcohol-soluble small molecules for efficient p–i–n planar perovskite solar cells with high open-circuit voltage

2019 ◽  
Vol 7 (37) ◽  
pp. 21140-21148 ◽  
Author(s):  
Kang Chen ◽  
Jingnan Wu ◽  
Yanan Wang ◽  
Qing Guo ◽  
Qiaoyun Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Defect Passivation

A π-conjugated and alcohol-soluble small molecule was used to passivate defects in p–i–n Pero-SCs with a PCE of 21.40% and Voc of 1.19 V.

scholarly journals Precise control over reduction potential of fulleropyrrolidines for organic photovoltaic materials

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7122-7129 ◽  
Author(s):  
M. Karakawa ◽  
T. Nagai ◽  
K. Adachi ◽  
Y. Ie ◽  
Y. Aso
Keyword(s):  
Methoxy Group ◽  
Reduction Potential ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Substitution Pattern ◽  
Precise Control ◽  
Photovoltaic Materials ◽  
Organic Photovoltaic Materials

A series of fulleropyrrolidines containing fluorine- and methoxy group were synthesized. The substitution pattern influenced the reduction potential of the fulleropyrrolidines and enabled precise control over an open circuit voltage of OPV cells.

Narrow band gap isoindigo-based small molecules for solution-processed organic solar cells with high open-circuit voltage

2016 ◽  
Vol 220 ◽  
pp. 448-454 ◽  
Author(s):  
Changyan Ji ◽  
Lunxiang Yin ◽  
Bao Xie ◽  
Xiaochen Wang ◽  
Xu Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Narrow Band ◽  
Open Circuit ◽  
Solution Processed

scholarly journals Open-circuit-voltage shift of over 0.5 V in organic photovoltaic cells induced by a minor structural difference in alkyl substituents

2020 ◽  
Vol 11 (7) ◽  
pp. 1825-1831 ◽  
Author(s):  
Mitsuharu Suzuki ◽  
Kengo Terai ◽  
Cassandre Quinton ◽  
Hironobu Hayashi ◽  
Naoki Aratani ◽  
...  
Keyword(s):  
Small Molecules ◽  
Open Circuit Voltage ◽  
Structural Difference ◽  
Open Circuit ◽  
X Ray Diffraction ◽  
Large Shift ◽  
X Ray ◽  
Alkyl Groups ◽  
A Minor ◽  
P Type

The cause of a large shift in open-circuit voltage induced by a minor difference in end-alkyl groups of p-type small molecules is examined via X-ray diffraction and computation, revealing a critical impact of molecular packing.

Novel solution-processible small molecules based on benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene for effective organic photovoltaics with high open-circuit voltage

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14540-14546 ◽  
Author(s):  
Lucheng Meng ◽  
Fen Wu ◽  
Hailu Liu ◽  
Bin Zhao ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit

Two novel A–D–A small molecules D1 and D2, containing benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene as the central electron-donating unit and two thiophenes or three thiophenes as conjugated π-bridges, were designed and synthesized.

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