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%.

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

The influence of the central acceptor unit on the optoelectronic properties and photovoltaic performance of A–D–A–D–A-type co-oligomers

2017 ◽  
Vol 4 (5) ◽  
pp. 755-766 ◽  
Author(s):  
Ibrahim Ata ◽  
Duško Popovic ◽  
Mika Lindén ◽  
Amaresh Mishra ◽  
Peter Bäuerle
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Molecular Structures ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

A series of A–D–A–D–A co-oligomers was developed and implemented as donor materials in solution-processable organic solar cells showing the dependence of molecular structures on the power conversion efficiency upon solvent vapor annealing.

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 Effect of the π-conjugation length on the properties and photovoltaic performance of A–π–D–π–A type oligothiophenes with a 4,8-bis(thienyl)benzo[1,2-b:4,5-b′]dithiophene core

2016 ◽  
Vol 12 ◽  
pp. 1788-1797 ◽  
Author(s):  
Ni Yin ◽  
Lilei Wang ◽  
Yi Lin ◽  
Jinduo Yi ◽  
Lingpeng Yan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Terminal Group ◽  
Absorption Bands ◽  
Conjugated Molecules

Benzo[1,2-b:4,5-b′]dithiophene (BDT) is an excellent building block for constructing π-conjugated molecules for the use in organic solar cells. In this paper, four 4,8-bis(5-alkyl-2-thienyl)benzo[1,2-b:4,5-b′]dithiophene (TBDT)-containing A–π–D–π–A-type small molecules (COOP-nHT-TBDT, n = 1, 2, 3, 4), having 2-cyano-3-octyloxy-3-oxo-1-propenyl (COOP) as terminal group and regioregular oligo(3-hexylthiophene) (nHT) as the π-conjugated bridge unit were synthesized. The optical and electrochemical properties of these compounds were systematically investigated. All these four compounds displayed broad absorption bands over 350–600 nm. The optical band gap becomes narrower (from 1.94 to 1.82 eV) and the HOMO energy levels increased (from −5.68 to −5.34 eV) with the increase of the length of the π-conjugated bridge. Organic solar cells using the synthesized compounds as the electron donor and PC61BM as the electron acceptor were fabricated and tested. Results showed that compounds with longer oligothiophene π-bridges have better power conversion efficiency and higher device stability. The device based on the quaterthiophene-bridged compound 4 gave a highest power conversion efficiency of 5.62% with a V OC of 0.93 V, J SC of 9.60 mA·cm−2, and a FF of 0.63.

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.

Photovoltaic performance and power conversion efficiency prediction of double fence porphyrins

2021 ◽  
Author(s):  
Canpu Yang ◽  
Peng Song ◽  
Reda El-Shishtawy ◽  
Fengcai Ma ◽  
Yuanzuo Li
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

To explore high efficiency dye-sensitized solar cells (DSSCs), two experimentally derived (single fence and double fence porphyrins) and two theoretically designed zinc porphyrin molecules with D-D-π-A-A configurations were studied. Density...

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.

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.

Tuning the central fused ring and terminal units to improve the photovoltaic performance of Ar(A–D)2 type small molecules in solution-processed organic solar cells

2016 ◽  
Vol 4 (13) ◽  
pp. 4952-4961 ◽  
Author(s):  
Jianhua Chen ◽  
Linrui Duan ◽  
Manjun Xiao ◽  
Qiong Wang ◽  
Bin Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Solution Processed ◽  
Fused Ring ◽  
Terminal Units

A series of Ar(A–D)2 type small molecules containing a pyrene core were synthesized. A significantly improved power conversion efficiency of 5.88% was obtained for ThDPP2Py based organic solar cells.

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