scholarly journals The role of connectivity in significant bandgap narrowing for fused-pyrene based non-fullerene acceptors toward high-efficiency organic solar cells

2020 ◽  
Vol 8 (12) ◽  
pp. 5995-6003 ◽  
Author(s):  
Shungang Liu ◽  
Wenyan Su ◽  
Xianshao Zou ◽  
Xiaoyan Du ◽  
Jiamin Cao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Structural Isomer ◽  
Bandgap Narrowing ◽  
Higher Power

Isomers of non-fullerene acceptors with pyrene as cores but fused at different positions were studied. FPIC6 possessed ∼119 nm of red-shift absorption and much higher power conversion efficiency of 11.55% as compared to its structural isomer FPIC5.

Trendsetters in High‐Efficiency Organic Solar Cells: Toward 20% Power Conversion Efficiency

Solar RRL ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 1900342 ◽  
Author(s):  
Mushfika Baishakhi Upama ◽  
Md Arafat Mahmud ◽  
Gavin Conibeer ◽  
Ashraf Uddin
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion

Progress and prospect on the morphology of non-fullerene acceptor based high-efficiency organic solar cells

2021 ◽  
Author(s):  
Lei Zhu ◽  
Ming Zhang ◽  
Wenkai Zhong ◽  
Shifeng Leng ◽  
Guanqing Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Critical Step

With the development of non-fullerene acceptors (NFAs), the power conversion efficiency (PCE) of organic solar cells (OSCs) has been continuously improved and has exceeded 18%. A critical step to realize...

scholarly journals Enhanced efficiency in hollow core electrospun nanofiber-based organic solar cells

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Ali Haghighat Bayan ◽  
Faramarz Afshar Taromi ◽  
Massimiliano Lanzi ◽  
Filippo Pierini
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Buffer Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Hollow Core ◽  
Pani Nanofibers

AbstractOver the last decade, nanotechnology and nanomaterials have attracted enormous interest due to the rising number of their applications in solar cells. A fascinating strategy to increase the efficiency of organic solar cells is the use of tailor-designed buffer layers to improve the charge transport process. High-efficiency bulk heterojunction (BHJ) solar cells have been obtained by introducing hollow core polyaniline (PANI) nanofibers as a buffer layer. An improved power conversion efficiency in polymer solar cells (PSCs) was demonstrated through the incorporation of electrospun hollow core PANI nanofibers positioned between the active layer and the electrode. PANI hollow nanofibers improved buffer layer structural properties, enhanced optical absorption, and induced a more balanced charge transfer process. Solar cell photovoltaic parameters also showed higher open-circuit voltage (+ 40.3%) and higher power conversion efficiency (+ 48.5%) than conventional architecture BHJ solar cells. Furthermore, the photovoltaic cell developed achieved the highest reported efficiency value ever reached for an electrospun fiber-based solar cell (PCE = 6.85%). Our results indicated that PANI hollow core nanostructures may be considered an effective material for high-performance PSCs and potentially applicable to other fields, such as fuel cells and sensors.

A donor polymer based on 3-cyanothiophene with superior batch-to-batch reproducibility for high-efficiency organic solar cells

2021 ◽  
Vol 14 (10) ◽  
pp. 5530-5540
Author(s):  
Xiyue Yuan ◽  
Yunli Zhao ◽  
Tao Zhan ◽  
Jiyeon Oh ◽  
Jiadong Zhou ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Molecular Weight Range ◽  
Weight Range

A donor polymer based on 3-cyanothiophene, a structurally simple unit, is synthesized for organic solar cells, which exhibited prominent power conversion efficiency and excellent batch-to-batch reproducibility in a wide molecular weight range.

High-efficiency organic solar cells based on a halide salt and polyfluorene polymer with a high alignment-level of the cathode selective contact

2018 ◽  
Vol 6 (45) ◽  
pp. 22534-22544 ◽  
Author(s):  
Victor S. Balderrama ◽  
José G. Sánchez ◽  
Gonzalo Lastra ◽  
Werther Cambarau ◽  
Saúl Arias ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Halide Salt ◽  
Halide Salts

The combination of halide salts with polyfluorene used as the buffer cathode in organic solar cells greatly improves the photovoltaic performance with the best power conversion efficiency being 11%.

The Role of Balanced Dual Charge Generation Pathways in Ternary Organic Solar Cells

2021 ◽  
Author(s):  
Zewen Chen ◽  
Hongzhu Chen ◽  
Chuang Feng ◽  
xiaojing wang ◽  
Zhicai He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Power ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Charge Generation ◽  
Efficient Charge

Efficient charge generation and transfer is crucial for Organic Solar Cells (OSCs) to achieve high power conversion efficiency (PCE). The ternary strategy is commonly used to expand the absorption range...

Ternary organic solar cells based on two compatible PDI-based acceptors with an enhanced power conversion efficiency

2019 ◽  
Vol 7 (8) ◽  
pp. 3552-3557 ◽  
Author(s):  
Kangkang Weng ◽  
Chao Li ◽  
Pengqing Bi ◽  
Hwa Sook Ryu ◽  
Yikun Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Perylene Diimide ◽  
Ternary Blends ◽  
Blend Films ◽  
Polymer Acceptor

The introduction of perylene diimide (PDI)-based polymer acceptor (PDI-V) into the ternary blends not only broadens the absorption of blend films but also increases the electron mobilities. As a result, a high efficiency of 9.43% was obtained for PDI-based ternary organic solar cells.

A high performance three-dimensional thiophene-annulated perylene dye as an acceptor for organic solar cells

2016 ◽  
Vol 52 (77) ◽  
pp. 11500-11503 ◽  
Author(s):  
Wei Fan ◽  
Ningning Liang ◽  
Dong Meng ◽  
Jiajing Feng ◽  
Yan Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Three Dimensional ◽  
Higher Power ◽  
Perylene Dye

A new three-dimensional thiophene-annulated perylene dye, namely tetra-PBI-S, was designed and synthesized. Organic solar cells based on the tetra-PBI-S acceptor show a much higher power conversion efficiency than tetra-PBI based solar cells.

The Effect of Donor Molecular Structure on Power Conversion Efficiency of Small-Molecule-Based Organic Solar Cells

2019 ◽  
Vol 16 (3) ◽  
pp. 236-243 ◽  
Author(s):  
Hui Zhang ◽  
Yibing Ma ◽  
Youyi Sun ◽  
Jialei Liu ◽  
Yaqing Liu ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Molecular Design ◽  
Power Conversion ◽  
The Relationship

In this review, small-molecule donors for application in organic solar cells reported in the last three years are highlighted. Especially, the effect of donor molecular structure on power conversion efficiency of organic solar cells is reported in detail. Furthermore, the mechanism is proposed and discussed for explaining the relationship between structure and power conversion efficiency. These results and discussions draw some rules for rational donor molecular design, which is very important for further improving the power conversion efficiency of organic solar cells based on the small-molecule donor.

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

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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