Synthesis and photophysical properties of regioregular low bandgap copolymers with controlled 5-fluorobenzotriazole orientation for photovoltaic application

2016 ◽  
Vol 7 (37) ◽  
pp. 5849-5861 ◽  
Author(s):  
M. L. Keshtov ◽  
A. R. Khokhlov ◽  
S. A. Kuklin ◽  
I. E. Ostapov ◽  
A. Yu. Nikolaev ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photophysical Properties ◽  
Hole Mobility ◽  
Electron Donors ◽  
Low Bandgap ◽  
Photovoltaic Application

Two regioregular P1 and random P2 copolymers were synthesized and examined as electron donors in BHJ solar cells. The high PCE achieved of 7.66% for P1 is attributed to increased hole mobility.

scholarly journals Two Novel, Simple-Structured and Easy-Synthesized Acceptors Based on Fluorene or Carbazole for Non-Fullerene Organic Solar Cells

2021 ◽  
Author(s):  
Fubiao Weng ◽  
Songping Shen ◽  
Peijin Zheng ◽  
Gengbiao Xu ◽  
Zhiwei Qiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Reduction Potential ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Hole Mobility ◽  
Oxidation Potential ◽  
Initial Oxidation ◽  
Mobility Rate

Abstract Two novel D-π-A-π-D type non-fullerene acceptors (FPTC and CPTC) composed of fluorene or carbazole as acceptor unit, benzene as intermediates and 2-(6-oxo-5,6-dihydro-4H-cyclopenta[c] thiophen-4-ylidene) malononitrile (TC) as terminal groups are synthesized through only two procedures. Also, their electrochemical behavior, photophysical properties and photovoltaic performance are systematically characterized and thoroughly studied. In consequence, the FPTC has better performance than C PTC, and the PCE of this device based on FPTC: PTB7-Th is nearly 1% higher than that of CPTC: PTB7-Th device, reaching up to 1.09% with a V OC of 0.71 V, a J SC of 3.42 mA cm − 2 . The higher PCE of the device based on FPTC is attributed to the fact that this molecular has a wider absorption spectrum and a higher molar extinction coefficient nearly four times than that of CPTC, a higher initial oxidation potential, and a lower onset reduction potential. Also, the higher electron mobility rate and hole mobility rate contribute to the device based on FPTC better performances. Compared with carbazole, the fluorene as the acceptor unit provides potential possibilities for the construction of high-performance organic solar cells.

2D-3D heterostructure enables scalable coating of efficient low-bandgap Sn–Pb mixed perovskite solar cells

Nano Energy ◽  
2019 ◽  
Vol 66 ◽  
pp. 104099 ◽  
Author(s):  
Linxiang Zeng ◽  
Zongao Chen ◽  
Shudi Qiu ◽  
Jinlong Hu ◽  
Chaohui Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Low Bandgap

Design of Low Bandgap CsPb 1− x Sn x I 2 Br Perovskite Solar Cells with Excellent Phase Stability

Small ◽  
2021 ◽  
pp. 2101380
Author(s):  
Gangshu Chen ◽  
Pengwei Li ◽  
Tangyue Xue ◽  
Meng Su ◽  
Junjie Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Stability ◽  
Perovskite Solar Cells ◽  
Low Bandgap

Dominant recombination path in low-bandgap kesterite CZTSe(S) solar cells from red light induced metastability

2021 ◽  
Vol 129 (20) ◽  
pp. 205703
Author(s):  
Mbafan S. Lyam ◽  
Torsten Hölscher ◽  
Matthias Maiberg ◽  
Antonio Cabas-Vidani ◽  
Alejandro Hernandez-Martinez ◽  
...  
Keyword(s):  
Solar Cells ◽  
Red Light ◽  
Low Bandgap

Photophysical properties of N719 and Z907 dyes, benchmark sensitizers for dye-sensitized solar cells, at room and low temperature

2021 ◽  
Vol 23 (10) ◽  
pp. 6182-6189
Author(s):  
Dariusz M. Niedzwiedzki
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Optical Spectroscopy ◽  
Room Temperature ◽  
Photophysical Properties ◽  
Dye Sensitized Solar Cells ◽  
Time Resolved ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Photophysical properties of N719 and Z907, benchmark Ru-dyes used as sensitizers in dye-sensitized solar cells, were studied by static and time-resolved optical spectroscopy at room temperature and 160 K.

scholarly journals Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells

2020 ◽  
Author(s):  
Safakath Karuthedath ◽  
Julien Gorenflot ◽  
Yuliar Firdaus ◽  
Neha Chaturvedi ◽  
Catherine S. P. De Castro ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Low Bandgap ◽  
Intrinsic Efficiency

Design, synthesis and photophysical properties of A-D-A-D-A small molecules for photovoltaic application

2015 ◽  
Vol 121 ◽  
pp. 99-108 ◽  
Author(s):  
Weibo Yan ◽  
Qian Zhang ◽  
Qingsong Qin ◽  
Senyun Ye ◽  
Yuanwei Lin ◽  
...  
Keyword(s):  
Small Molecules ◽  
Photophysical Properties ◽  
Design Synthesis ◽  
Photovoltaic Application

Low bandgap alternating polyfluorene copolymers in plastic photodiodes and solar cells

2004 ◽  
Vol 79 (1) ◽  
pp. 31-35 ◽  
Author(s):  
O. Inganäs ◽  
M. Svensson ◽  
F. Zhang ◽  
A. Gadisa ◽  
N.K. Persson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Bandgap
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