Cosolvent Effects When Blade-Coating a Low-Solubility Conjugated Polymer for Bulk Heterojunction Organic Photovoltaics

2020 ◽  
Vol 12 (24) ◽  
pp. 27416-27424 ◽  
Author(s):  
Ian Pelse ◽  
Jeff L. Hernandez ◽  
Sebastian Engmann ◽  
Andrew A. Herzing ◽  
Lee J. Richter ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Conjugated Polymer ◽  
Bulk Heterojunction ◽  
Low Solubility ◽  
Blade Coating ◽  
Cosolvent Effects

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.

The effect of light environment during the film formation process on the morphology and function of organic photovoltaics

2019 ◽  
Vol 7 (34) ◽  
pp. 10581-10588 ◽  
Author(s):  
Xiaomin Wu ◽  
Shuqiong Lan ◽  
Guocheng Zhang ◽  
Huipeng Chen ◽  
Tailiang Guo
Keyword(s):  
Organic Photovoltaics ◽  
Formation Process ◽  
Bulk Heterojunction ◽  
Film Formation ◽  
Light Environment ◽  
Coating Process ◽  
Device Performance ◽  
And Function ◽  
Blade Coating ◽  
Effect Of Light

Light environment during blade coating process has significant impact on the morphology, thermodynamics, and device performance of bulk-heterojunction blends.

Effect of carbon nanotube-fullerene hybrid additive on P3HT:PCBM bulk-heterojunction organic photovoltaics

2012 ◽  
Vol 162 (1-2) ◽  
pp. 95-101 ◽  
Author(s):  
Nigel J. Alley ◽  
Kang-Shyang Liao ◽  
Enrico Andreoli ◽  
Sampath Dias ◽  
Eoghan P. Dillon ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction

Asymmetric, efficient π-conjugated organic semiconducting chromophore for bulk-heterojunction organic photovoltaics

2018 ◽  
Vol 149 ◽  
pp. 141-148 ◽  
Author(s):  
M. Nazim ◽  
Sadia Ameen ◽  
M. Shaheer Akhtar ◽  
Hyung Shik Shin
Keyword(s):  
Organic Photovoltaics ◽  
Bulk Heterojunction

Characterizing enhanced performance of nanopatterned bulk heterojunction organic photovoltaics

2008 ◽  
Author(s):  
John R. Tumbleston ◽  
Doo-Hyun Ko ◽  
Rene Lopez ◽  
Edward T. Samulski
Keyword(s):  
Organic Photovoltaics ◽  
Bulk Heterojunction

Changes in Optimal Ternary Additive Loading when Processing Large Area Organic Photovoltaics by Spin‐ versus Blade‐Coating Methods

Solar RRL ◽  
2021 ◽  
Vol 5 (10) ◽  
pp. 2100432
Author(s):  
Chithiravel Sundaresan ◽  
Salima Alem ◽  
Chase L. Radford ◽  
Trevor M. Grant ◽  
Timothy L. Kelly ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Large Area ◽  
Coating Methods ◽  
Blade Coating

scholarly journals Network-Stabilized Bulk Heterojunction Organic Photovoltaics

2018 ◽  
Vol 30 (22) ◽  
pp. 8314-8321 ◽  
Author(s):  
Jorge Wu Mok ◽  
Zhiqi Hu ◽  
Changxu Sun ◽  
Isaiah Barth ◽  
Rodrigo Muñoz ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Bulk Heterojunction

A New Fullerene-Free Bulk-Heterojunction System for Efficient High-Voltage and High-Fill Factor Solution-Processed Organic Photovoltaics

2015 ◽  
Vol 27 (11) ◽  
pp. 1900-1907 ◽  
Author(s):  
Zheng Tang ◽  
Bo Liu ◽  
Armantas Melianas ◽  
Jonas Bergqvist ◽  
Wolfgang Tress ◽  
...  
Keyword(s):  
High Voltage ◽  
Organic Photovoltaics ◽  
Fill Factor ◽  
Bulk Heterojunction ◽  
Factor Solution ◽  
Solution Processed ◽  
High Fill Factor

scholarly journals Nano-pathways: Bridging the divide between water-processable nanoparticulate and bulk heterojunction organic photovoltaics

Nano Energy ◽  
2016 ◽  
Vol 19 ◽  
pp. 495-510 ◽  
Author(s):  
Natalie P. Holmes ◽  
Melissa Marks ◽  
Pankaj Kumar ◽  
Renee Kroon ◽  
Matthew G. Barr ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Bulk Heterojunction

Reduced Bimolecular Recombination in Conjugated Polymer Donor/Fullerene Acceptor Bulk Heterojunction Solar Cells

2012 ◽  
Vol 65 (5) ◽  
pp. 442 ◽  
Author(s):  
Attila J. Mozer ◽  
Tracey M. Clarke
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Roll To Roll ◽  
Active Layers ◽  
Bimolecular Recombination

We show significantly reduced bimolecular recombination in a novel silole-based copolymer (KP115):fullerene blend, which allows the fabrication of polymer solar cells with relatively thick active layers. This leads to improved device efficiencies and makes roll-to-roll printing much easier. The origin of the reduced recombination, however, is not known. Our recent data suggest that published models are inadequate to explain this phenomenon.

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