scholarly journals 15.34% efficiency all-small-molecule organic solar cells with an improved fill factor enabled by a fullerene additive

2020 ◽  
Vol 13 (7) ◽  
pp. 2134-2141 ◽  
Author(s):  
Dingqin Hu ◽  
Qianguang Yang ◽  
Haiyan Chen ◽  
Friso Wobben ◽  
Vincent M. Le Corre ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Donor And Acceptor ◽  
Bimolecular Recombination

A fullerene additive adjusts the miscibility between donor and acceptor for morphology optimization and reduces bimolecular recombination, assisting significant improvement of fill factor and efficiency.

scholarly journals Improved Reliability of Small Molecule Organic Solar Cells by Double Anode Buffer Layers

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Pao-Hsun Huang ◽  
Chien-Jung Huang ◽  
Kan-Lin Chen ◽  
Jhong-Ciao Ke ◽  
Yeong-Her Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Copper Phthalocyanine ◽  
Open Circuit ◽  
Buffer Layers ◽  
Double Layers ◽  
Temperature And Pressure ◽  
Planar Heterojunction

An optimized hybrid planar heterojunction (PHJ) of small molecule organic solar cells (SM-OSCs) based on copper phthalocyanine (CuPc) as donor and fullerene (C60) as acceptor was fabricated, which obviously enhanced the performance of device by sequentially using both MoO3and pentacene as double anode buffer layers (ABL), also known as hole extraction layer (HEL). A series of the vacuum-deposited ABL, acting as an electron and exciton blocking layer, were examined for their characteristics in SM-OSCs. The performance and reliability were compared between conventional ITO/ABL/CuPc/C60/BCP/Ag cells and the new ITO/double ABL/CuPc/C60/BCP/Ag cells. The effect on the electrical properties of these materials was also investigated to obtain the optimal thickness of ABL. The comparison shows that the modified cell has an enhanced reliability compared to traditional cells. The improvement of lifetime was attributed to the idea of double layers to prevent humidity and oxygen from diffusing into the active layer. We demonstrated that the interfacial extraction layers are necessary to avoid degradation of device. That is to say, in normal temperature and pressure, a new avenue for the device within double buffer layers has exhibited the highest values of open circuit voltage (Voc), fill factor (FF), and lifetime in this work compared to monolayer of ABL.

High-efficiency non-fullerene organic solar cells enabled by a difluorobenzothiadiazole-based donor polymer combined with a properly matched small molecule acceptor

2015 ◽  
Vol 8 (2) ◽  
pp. 520-525 ◽  
Author(s):  
Jingbo Zhao ◽  
Yunke Li ◽  
Haoran Lin ◽  
Yuhang Liu ◽  
Kui Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Donor And Acceptor ◽  
Conversion Efficiencies ◽  
Matched Donor

Non-fullerene organic solar cells with power conversion efficiencies of up to 6.3% are reported using properly matched donor and acceptor.

Optimized Phase Separation and Reduced Geminate Recombination in High Fill Factor Small-Molecule Organic Solar Cells

2016 ◽  
Vol 2 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Jun Yan ◽  
Quanbin Liang ◽  
Kaikai Liu ◽  
Jingsheng Miao ◽  
Hui Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Geminate Recombination ◽  
High Fill Factor

Regulating the optoelectronic properties of small molecule donors with multiple alternative electron-donor and acceptor units for organic solar cells

2018 ◽  
Vol 6 (17) ◽  
pp. 8101-8108 ◽  
Author(s):  
Yuan Zhao ◽  
Huan Wang ◽  
Weixuan Zeng ◽  
Shengpeng Xia ◽  
Feng Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Optoelectronic Properties ◽  
Structure Property ◽  
Donor And Acceptor ◽  
Multiple Alternative ◽  
Electron Donor And Acceptor ◽  
Property Performance

Small molecule donors with multiple alternative electron-donor and acceptor units were synthesized via C–H functionalization with the structure–property–performance relationship investigated.

All-Small-Molecule Nonfullerene Organic Solar Cells with High Fill Factor and High Efficiency over 10%

2017 ◽  
Vol 29 (17) ◽  
pp. 7543-7553 ◽  
Author(s):  
Beibei Qiu ◽  
Lingwei Xue ◽  
Yankang Yang ◽  
Haijun Bin ◽  
Yindong Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
High Efficiency ◽  
High Fill Factor

Highly efficient and thermally stable fullerene-free organic solar cells based on a small molecule donor and acceptor

2016 ◽  
Vol 4 (42) ◽  
pp. 16335-16340 ◽  
Author(s):  
Sachin Badgujar ◽  
Chang Eun Song ◽  
Sora Oh ◽  
Won Suk Shin ◽  
Sang-Jin Moon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Thermally Stable ◽  
Highly Efficient ◽  
Donor And Acceptor

We studied fullerene-free organic solar cells using rhodanine-terminated BDT3TR and O-IDTBR.

scholarly journals Effect of 4-biphenyl groups on the charge transport and photovoltaic properties of arylamine based push–pull systems

2020 ◽  
Vol 44 (27) ◽  
pp. 11441-11447 ◽  
Author(s):  
Pablo Simón Marqués ◽  
José María Andrés Castán ◽  
Pierre Josse ◽  
Martin Blais ◽  
Amir Hossein Habibi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Power Conversion ◽  
Photovoltaic Properties ◽  
Pull Systems ◽  
Planar Heterojunction ◽  
Conversion Efficiencies

The synthesis of two N,N-bis(4-biphenylyl)aniline (BPA) based push–pull is reported herein. Evaluation as donor materials in all-small-molecule planar-heterojunction organic solar cells lead to impressive fill factor (>73%) and promising power conversion efficiencies.

N,N-Diarylamino end-capping as a new strategy for simultaneously enhancing open-circuit voltage, short-circuit current density and fill factor in small molecule organic solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 20724-20733 ◽  
Author(s):  
Daobin Yang ◽  
Youqin Zhu ◽  
Yan Jiao ◽  
Lin Yang ◽  
Qianqian Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
New Strategy ◽  
End Capping

N,N-Diarylamino end-capping strategy for asymmetrical squaraines with simultaneously enhanced Voc, Jsc and FF in solution-processed small molecule organic solar cells.

scholarly journals Efficient carbazole-based small-molecule organic solar cells with an improved fill factor

RSC Advances ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 4867-4871 ◽  
Author(s):  
Yongtao Liu ◽  
Yanna Sun ◽  
Miaomiao Li ◽  
Huanran Feng ◽  
Wang Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Central Unit ◽  
Donor Acceptor ◽  
End Group

In this study, a new acceptor–donor–acceptor (A–D–A) small molecule, DI3TCz, with carbazole as the central unit and 1,3-indanedione as the end group, was designed and synthesized for application in organic solar cells.

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