Regulating the vertical phase distribution by fullerene-derivative in high performance ternary organic solar cells

A novel solution-processed graphene-based material was synthesized by treating graphene oxide (GO) with 2,5,7-trinitro-9-oxo-fluorenone-4-carboxylic acid (TNF-COOH) moieties, via simple synthetic routes. The yielded molecule N-[(carbamoyl-GO)ethyl]-N’-[(carbamoyl)-(2,5,7-trinitro-9-oxo-fluorene)] (GO-TNF) was thoroughly characterized and it was shown that it presents favorable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels to function as a bridge component between the polymeric donor poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl}) (PTB7) and the fullerene derivative acceptor [6,6]-phenyl-C71-butyric-acid-methylester (PC71BM). In this context, a GO-TNF based ink was prepared and directly incorporated within the binary photoactive layer, in different volume ratios (1-3% ratio to the blend), for the effective realization of inverted ternary organic solar cells (OSCs) of the structure ITO/PFN/PTB7:GO-TNF:PC71BM/MoO3/Al. The addition of 2% v/v GO-TNF ink led to a champion power conversion efficiency (PCE) of 8.71% that was enhanced by ~13% as compared to the reference cell.

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Non-Fullerene-Derivative-Dependent Dielectric Properties in High-Performance Ternary Organic Solar Cells

IEEE Journal of Photovoltaics ◽

10.1109/jphotov.2019.2908789 ◽

2019 ◽

Vol 9 (4) ◽

pp. 1031-1039 ◽

Cited By ~ 5

Author(s):

Leiping Duan ◽

Cheng Xu ◽

Haimang Yi ◽

Mushfika Baishakhi Upama ◽

Md Arafat Mahmud ◽

...

Keyword(s):

Solar Cells ◽

Dielectric Properties ◽

Organic Solar Cells ◽

High Performance ◽

Fullerene Derivative

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Emphasizing the Operational Role of a Novel Graphene-Based Ink into High Performance Ternary Organic Solar Cells

Nanomaterials ◽

10.3390/nano10010089 ◽

2020 ◽

Vol 10 (1) ◽

pp. 89 ◽

Cited By ~ 3

Author(s):

Minas M. Stylianakis ◽

Dimitrios M. Kosmidis ◽

Katerina Anagnostou ◽

Christos Polyzoidis ◽

Miron Krassas ◽

...

Keyword(s):

Solar Cells ◽

Molecular Orbital ◽

Organic Solar Cells ◽

High Performance ◽

Energy Levels ◽

Fullerene Derivative ◽

Highest Occupied Molecular Orbital ◽

Lowest Unoccupied Molecular Orbital ◽

Synthetic Routes

A novel solution-processed, graphene-based material was synthesized by treating graphene oxide (GO) with 2,5,7-trinitro-9-oxo-fluorenone-4-carboxylic acid (TNF-COOH) moieties, via simple synthetic routes. The yielded molecule N-[(carbamoyl-GO)ethyl]-N′-[(carbamoyl)-(2,5,7-trinitro-9-oxo-fluorene)] (GO-TNF) was thoroughly characterized and it was shown that it presents favorable highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels to function as a bridge component between the polymeric donor poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl}) (PTB7) and the fullerene derivative acceptor [6,6]-phenyl-C71-butyric-acid-methylester (PC71BM). In this context, a GO-TNF based ink was prepared and directly incorporated within the binary photoactive layer, in different volume ratios (1%–3% ratio to the blend) for the effective realization of inverted ternary organic solar cells (OSCs) of the structure ITO/PFN/PTB7:GO-TNF:PC71BM/MoO3/Al. The addition of 2% v/v GO-TNF ink led to a champion power conversion efficiency (PCE) of 8.71% that was enhanced by ~13% as compared to the reference cell.

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High-Performance and Low-Energy Loss Organic Solar Cells with Non-fused Ring Acceptor by Alkyl Chain Engineering

Chemical Engineering Journal ◽

10.1016/j.cej.2021.129768 ◽

2021 ◽

pp. 129768

Author(s):

Dou Luo ◽

Xue Lai ◽

Nan Zheng ◽

Chenghao Duan ◽

Zhaojin Wang ◽

...

Keyword(s):

Solar Cells ◽

Energy Loss ◽

Organic Solar Cells ◽

High Performance ◽

Alkyl Chain ◽

Low Energy ◽

Fused Ring

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A Facile Synthesized Polymer Featuring B‐N Covalent Bond and Small Singlet‐Triplet Gap for High‐Performance Organic Solar Cells

Angewandte Chemie International Edition ◽

10.1002/anie.202016265 ◽

2021 ◽

Vol 60 (16) ◽

pp. 8813-8817

Author(s):

Shuting Pang ◽

Zhiqiang Wang ◽

Xiyue Yuan ◽

Langheng Pan ◽

Wanyuan Deng ◽

...

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

High Performance ◽

Covalent Bond

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High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

Nature Communications ◽

10.1038/s41467-020-20431-6 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Zhenrong Jia ◽

Shucheng Qin ◽

Lei Meng ◽

Qing Ma ◽

Indunil Angunawela ◽

...

Keyword(s):

Solar Cells ◽

Power Conversion Efficiency ◽

Conversion Efficiency ◽

Organic Solar Cells ◽

High Performance ◽

Short Circuit ◽

Power Conversion ◽

High Power Conversion Efficiency ◽

Device Structure ◽

Narrow Bandgap

AbstractTandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm−2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

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