Molecular engineering of A–D–C–D–A configured small molecular acceptors (SMAs) with promising photovoltaic properties for high-efficiency fullerene-free organic solar cells

2020 ◽  
Vol 52 (8) ◽  
Author(s):  
Riaz Hussain ◽  
Faiza Hassan ◽  
Muhammad Usman Khan ◽  
Muhammad Yasir Mehboob ◽  
Rafia Fatima ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Molecular Engineering ◽  
Photovoltaic Properties

scholarly journals Molecular Engineering Enhances the Charge Carriers Transport in Wide Band-Gap Polymer Donors Based Polymer Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4101
Author(s):  
Siyang Liu ◽  
Shuwang Yi ◽  
Peiling Qing ◽  
Weijun Li ◽  
Bin Gu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Acid Methyl Ester ◽  
Wide Band ◽  
Molecular Engineering ◽  
Wide Band Gap ◽  
Photovoltaic Properties ◽  
Solvent Vapor

The novel and appropriate molecular design for polymer donors are playing an important role in realizing high-efficiency and high stable polymer solar cells (PSCs). In this work, four conjugated polymers (PIDT-O, PIDTT-O, PIDT-S and PIDTT-S) with indacenodithiophene (IDT) and indacenodithieno [3,2-b]thiophene (IDTT) as the donor units, and alkoxy-substituted benzoxadiazole and benzothiadiazole derivatives as the acceptor units have been designed and synthesized. Taking advantages of the molecular engineering on polymer backbones, these four polymers showed differently photophysical and photovoltaic properties. They exhibited wide optical bandgaps of 1.88, 1.87, 1.89 and 1.91 eV and quite impressive hole mobilities of 6.01 × 10−4, 7.72 × 10−4, 1.83 × 10−3, and 1.29 × 10−3 cm2 V−1 s−1 for PIDT-O, PIDTT-O, PIDT-S and PIDTT-S, respectively. Through the photovoltaic test via using PIDT-O, PIDTT-O, PIDT-S and PIDTT-S as donor materials and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as acceptor materials, all the PSCs presented the high open circuit voltages (Vocs) over 0.85 V, whereas the PIDT-S and PIDTT-S based devices showed higher power conversion efficiencies (PCEs) of 5.09% and 4.43%, respectively. Interestingly, the solvent vapor annealing (SVA) treatment on active layers could improve the fill factors (FFs) extensively for these four polymers. For PIDT-S and PIDTT-S, the SVA process improved the FFs exceeding 71%, and ultimately the PCEs were increased to 6.05%, and 6.12%, respectively. Therefore, this kind of wide band-gap polymers are potentially candidates as efficient electron-donating materials for constructing high-performance PSCs.

Molecular engineering of central fused-ring cores of non-fullerene acceptors for high-efficiency organic solar cells

2019 ◽  
Vol 7 (9) ◽  
pp. 4313-4333 ◽  
Author(s):  
Hongtao Wang ◽  
Jinru Cao ◽  
Jiangsheng Yu ◽  
Zhuohan Zhang ◽  
Renyong Geng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Molecular Engineering ◽  
Electron Acceptors ◽  
Fused Ring

Core engineering on fused-ring electron acceptors for high-efficiency OSCs is reviewed.

High‐Efficiency Nonfullerene Organic Solar Cells Enabled by Atomic Layer Deposited Zirconium‐Doped Zinc Oxide

Solar RRL ◽  
2020 ◽  
Vol 4 (10) ◽  
pp. 2000241
Author(s):  
Geedhika K. Poduval ◽  
Leiping Duan ◽  
Md. Anower Hossain ◽  
Borong Sang ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Atomic Layer

scholarly journals Organic Solar Cells: High‐Efficiency Organic Photovoltaics using Eutectic Acceptor Fibrils to Achieve Current Amplification (Adv. Mater. 18/2021)

2021 ◽  
Vol 33 (18) ◽  
pp. 2170142
Author(s):  
Ming Zhang ◽  
Lei Zhu ◽  
Tianyu Hao ◽  
Guanqing Zhou ◽  
Chaoqun Qiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Current Amplification

Stretchable ITO‐Free Organic Solar Cells with Intrinsic Anti‐Reflection Substrate for High‐Efficiency Outdoor and Indoor Energy Harvesting

2021 ◽  
Vol 31 (16) ◽  
pp. 2010172
Author(s):  
Jiaming Huang ◽  
Zhiwei Ren ◽  
Yaokang Zhang ◽  
Kuan Liu ◽  
Hengkai Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Harvesting ◽  
Organic Solar Cells ◽  
High Efficiency

scholarly journals Solution-Processed Transparent Conducting Electrodes for Flexible Organic Solar Cells with 16.61% Efficiency

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Juanyong Wan ◽  
Yonggao Xia ◽  
Junfeng Fang ◽  
Zhiguo Zhang ◽  
Bingang Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Work Function ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Electrical Stability ◽  
Solution Processed ◽  
Good Thermal Stability ◽  
Transparent Conducting ◽  
High Flexibility

AbstractNonfullerene organic solar cells (OSCs) have achieved breakthrough with pushing the efficiency exceeding 17%. While this shed light on OSC commercialization, high-performance flexible OSCs should be pursued through solution manufacturing. Herein, we report a solution-processed flexible OSC based on a transparent conducting PEDOT:PSS anode doped with trifluoromethanesulfonic acid (CF3SO3H). Through a low-concentration and low-temperature CF3SO3H doping, the conducting polymer anodes exhibited a main sheet resistance of 35 Ω sq−1 (minimum value: 32 Ω sq−1), a raised work function (≈ 5.0 eV), a superior wettability, and a high electrical stability. The high work function minimized the energy level mismatch among the anodes, hole-transporting layers and electron-donors of the active layers, thereby leading to an enhanced carrier extraction. The solution-processed flexible OSCs yielded a record-high efficiency of 16.41% (maximum value: 16.61%). Besides, the flexible OSCs afforded the 1000 cyclic bending tests at the radius of 1.5 mm and the long-time thermal treatments at 85 °C, demonstrating a high flexibility and a good thermal stability.

Thickness-Insensitive Anode Interface Layer for High-Efficiency Organic Solar Cells

2021 ◽  
Author(s):  
Haitao Xu ◽  
Helong Zou ◽  
Dan Zhou ◽  
Lifu Zhang ◽  
Xunfan Liao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Interface Layer
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