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.

New small-molecule acceptors based on hexacyclic naphthalene(cyclopentadithiophene) for efficient non-fullerene organic solar cells

2017 ◽  
Vol 5 (33) ◽  
pp. 17204-17210 ◽  
Author(s):  
Yuan-Qiu-Qiang Yi ◽  
Huanran Feng ◽  
Meijia Chang ◽  
Hongtao Zhang ◽  
Xiangjian Wan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Central Unit ◽  
Donor Acceptor

A series of new non-fullerene small molecule acceptors (NTIC, NTIC-Me, NTIC-OMe and NTIC-F) based on the acceptor–donor–acceptor (A–D–A) architecture, using hexacyclic naphthalene-(cyclopentadithiophene) as the central unit, were designed and synthesized.

scholarly journals End Group Tuning in Acceptor–Donor–Acceptor Nonfullerene Small Molecules for High Fill Factor Organic Solar Cells

2019 ◽  
Vol 29 (47) ◽  
pp. 1808429 ◽  
Author(s):  
Andrew Wadsworth ◽  
Helen Bristow ◽  
Zeinab Hamid ◽  
Maxime Babics ◽  
Nicola Gasparini ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Donor Acceptor ◽  
High Fill Factor ◽  
End Group

Donor-acceptor small molecule with coplanar and rigid π-bridge for efficient organic solar cells

2013 ◽  
Vol 109 ◽  
pp. 33-39 ◽  
Author(s):  
Liang-Chen Chi ◽  
Hsiao-Fan Chen ◽  
Wen-Yi Hung ◽  
Yu-Hsiang Hsu ◽  
Ping-Chi Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Donor Acceptor

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 All-small-molecule organic solar cells with over 14% efficiency by optimizing hierarchical morphologies

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruimin Zhou ◽  
Zhaoyan Jiang ◽  
Chen Yang ◽  
Jianwei Yu ◽  
Jirui Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Photovoltaic System ◽  
Active Layers ◽  
Donor Acceptor

AbstractThe high efficiency all-small-molecule organic solar cells (OSCs) normally require optimized morphology in their bulk heterojunction active layers. Herein, a small-molecule donor is designed and synthesized, and single-crystal structural analyses reveal its explicit molecular planarity and compact intermolecular packing. A promising narrow bandgap small-molecule with absorption edge of more than 930 nm along with our home-designed small molecule is selected as electron acceptors. To the best of our knowledge, the binary all-small-molecule OSCs achieve the highest efficiency of 14.34% by optimizing their hierarchical morphologies, in which the donor or acceptor rich domains with size up to ca. 70 nm, and the donor crystals of tens of nanometers, together with the donor-acceptor blending, are proved coexisting in the hierarchical large domain. All-small-molecule photovoltaic system shows its promising for high performance OSCs, and our study is likely to lead to insights in relations between bulk heterojunction structure and photovoltaic performance.

A cyclopentadithiophene-bridged small molecule acceptor with near-infrared light absorption for efficient organic solar cells

2019 ◽  
Vol 7 (14) ◽  
pp. 4013-4019 ◽  
Author(s):  
Yuan-Qiu-Qiang Yi ◽  
Huanran Feng ◽  
Xin Ke ◽  
Jing Yan ◽  
Meijia Chang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Light Absorption ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Donor Acceptor

A cyclopentadithiophene (DTC)-bridged acceptor–donor–acceptor (A–D–A) backboned small molecule acceptor (SMA), namely IDTC-4Cl, was designed and synthesized.

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.

Vinazene end-capped acceptor-donor-acceptor type small molecule for solution-processed organic solar cells

2017 ◽  
Vol 44 ◽  
pp. 11-19 ◽  
Author(s):  
Ming Chen ◽  
Maoheng Yi ◽  
Jinduo Yi ◽  
Minjie Li ◽  
Chenchen Du ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Solution Processed ◽  
Donor Acceptor

Towards high-efficiency non-fullerene organic solar cells: Matching small molecule/polymer donor/acceptor

2014 ◽  
Vol 15 (10) ◽  
pp. 2270-2276 ◽  
Author(s):  
Pei Cheng ◽  
Xingang Zhao ◽  
Weiyi Zhou ◽  
Jianhui Hou ◽  
Yongfang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Donor 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
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