Efficiency enhancement of organic photovoltaics by introducing high-mobility curved small-molecule semiconductors as additives

2019 ◽  
Vol 7 (20) ◽  
pp. 12740-12750 ◽  
Author(s):  
Shenghua Liu ◽  
Changqing Li ◽  
Xiaomin Xu ◽  
Peng You ◽  
Naixiang Wang ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
High Mobility ◽  
Hole Mobility ◽  
Significant Enhancement ◽  
Efficiency Enhancement ◽  
Highly Efficient ◽  
Device Efficiency

Highly efficient OPVs are successfully fabricated by introducing high-mobility curved organic semiconductors. The significant enhancement of the device efficiency induced by the curved molecules can be attributed to increased hole mobility in the active layer and intimate interaction between the curved molecules and PC71BM.

Effects of morphology evolution on solution-processed small molecule photovoltaics via a solvent additive

2017 ◽  
Vol 5 (31) ◽  
pp. 7837-7844 ◽  
Author(s):  
Quoc Viet Hoang ◽  
Shafket Rasool ◽  
Sora Oh ◽  
Doan Van Vu ◽  
Da Hun Kim ◽  
...  
Keyword(s):  
Active Layer ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
Morphology Evolution ◽  
Solution Processed ◽  
Solvent Additive

A newly synthesized small molecule donor, BDTT-2DPPBFu, is designed for incorporation into the photo-active layer in solution-processed small molecule organic photovoltaics (SM-OPVs).

Enhancing photovoltaic performance by tuning the domain sizes of a small-molecule acceptor by side-chain-engineered polymer donors

2019 ◽  
Vol 7 (7) ◽  
pp. 3072-3082 ◽  
Author(s):  
Yu-Che Lin ◽  
Yi-Ju Lu ◽  
Cheng-Si Tsao ◽  
Akinori Saeki ◽  
Jia-Xing Li ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
Photovoltaic Performance ◽  
Side Chain

This paper reports side-chain-engineered polymer donors and a small-molecule acceptor that are capable of simultaneous charge and energy transfer as the active layer for organic photovoltaics.

scholarly journals Impact of substituents on the performance of small-molecule semiconductors in organic photovoltaic devices via regulating morphology

2022 ◽  
Author(s):  
Mitsuharu Suzuki ◽  
Kanta Suzuki ◽  
Taehyun Won ◽  
Hiroko Yamada
Keyword(s):  
Organic Semiconductors ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Photovoltaic Applications

This review summarizes recent prominent examples of substituent engineering on small-molecule organic semiconductors for photovoltaic applications, focusing on flexible substituents that regulate the active-layer morphology.

A block copolymer enhances the efficiency of small-molecule bulk-heterojunction photovoltaics

2016 ◽  
Vol 4 (6) ◽  
pp. 2228-2235 ◽  
Author(s):  
Hsiu-Cheng Chen ◽  
Yu-Wei Su ◽  
Kung-Hwa Wei
Keyword(s):  
Block Copolymer ◽  
Active Layer ◽  
Small Molecule ◽  
Bulk Heterojunction ◽  
Device Efficiency ◽  
Bulk Heterojunction Photovoltaics

Using a PS-b-PEO block copolymer in the active layer allowed effective tuning of the small molecule active layer morphology and enhanced device efficiency.

scholarly journals Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable small molecule acceptor ternary solar cells

2016 ◽  
Vol 16 (3) ◽  
pp. 363-369 ◽  
Author(s):  
Derya Baran ◽  
Raja Shahid Ashraf ◽  
David A. Hanifi ◽  
Maged Abdelsamie ◽  
Nicola Gasparini ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
Highly Efficient

scholarly journals Phase Behavior in the Active Layer of Small Molecule Organic Photovoltaics: State Diagram of p-DTS(FBTTh2)2:PC71BM

2020 ◽  
Vol 124 (13) ◽  
pp. 7566-7577
Author(s):  
Niko Van den Brande ◽  
Maxime Defour ◽  
Dries Devisscher ◽  
Pieter Verstappen ◽  
Gunter Reekmans ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
State Diagram

scholarly journals Improving the Photostability of Small-Molecule-Based Organic Photovoltaics by Providing a Charge Percolation Pathway of Crystalline Conjugated Polymer

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2598
Author(s):  
Jihee Kim ◽  
Chang Woo Koh ◽  
Mohammad Afsar Uddin ◽  
Ka Yeon Ryu ◽  
Song-Rim Jang ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Conjugated Polymer ◽  
Bulk Heterojunction ◽  
Hole Mobility ◽  
Chemical Structures ◽  
Active Layers ◽  
Similar Chemical ◽  
A Charge ◽  
Soaking Test

Photostability of small-molecule (SM)-based organic photovoltaics (SM-OPVs) is greatly improved by utilizing a ternary photo-active layer incorporating a small amount of a conjugated polymer (CP). Semi-crystalline poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2FBT) and amorphous poly[(2,5-bis(2-decyltetradecyloxy)phenylene)-alt-(5,6-dicyano-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2CNBT) with similar chemical structures were used for preparing SM:fullerene:CP ternary photo-active layers. The power conversion efficiency (PCE) of the ternary device with PPDT2FBT (Ternary-F) was higher than those of the ternary device with PPDT2CNBT (Ternary-CN) and a binary SM-OPV device (Binary) by 15% and 17%, respectively. The photostability of the SM-OPV was considerably improved by the addition of the crystalline CP, PPDT2FBT. Ternary-F retained 76% of its initial PCE after 1500 h of light soaking, whereas Ternary-CN and Binary retained only 38% and 17% of their initial PCEs, respectively. The electrical and morphological analyses of the SM-OPV devices revealed that the addition of the semi-crystalline CP led to the formation of percolation pathways for charge transport without disturbing the optimized bulk heterojunction morphology. The CP also suppressed trap-assisted recombination and enhanced the hole mobility in Ternary-F. The percolation pathways enabled the hole mobility of Ternary-F to remain constant during the light-soaking test. The photostability of Ternary-CN did not improve because the addition of the amorphous CP inhibited the formation of ordered SM domains.

Highly efficient quaternary organic photovoltaics by optimizing photogenerated exciton distribution and active layer morphology

Nano Energy ◽  
2020 ◽  
Vol 70 ◽  
pp. 104496 ◽  
Author(s):  
Xiaoling Ma ◽  
Jian Wang ◽  
Qiaoshi An ◽  
Jinhua Gao ◽  
Zhenghao Hu ◽  
...  
Keyword(s):  
Active Layer ◽  
Organic Photovoltaics ◽  
Highly Efficient ◽  
Exciton Distribution
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