Insulating polymer additives in small molecule and polymer photovoltaics: how they are tolerated and their use as potential interlayers

2017 ◽  
Vol 5 (13) ◽  
pp. 3315-3322 ◽  
Author(s):  
Joseph G. Manion ◽  
Dong Gao ◽  
Peter M. Brodersen ◽  
Dwight S. Seferos
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Polymer Additives ◽  
Polymer Photovoltaics ◽  
Efficient Performance

Additives are key to achieving optimal morphologies and efficient performance in bulk heterojunction organic photovoltaics.

Synergistic effects of solvent and polymer additives on solar cell performance and stability of small molecule bulk heterojunction solar cells

2016 ◽  
Vol 4 (47) ◽  
pp. 18383-18391 ◽  
Author(s):  
Hyo-Sang Lee ◽  
Hyungju Ahn ◽  
Jea Woong Jo ◽  
BongSoo Kim ◽  
Hae Jung Son
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Small Molecule ◽  
Bulk Heterojunction ◽  
Synergistic Effects ◽  
Cell Performance ◽  
Polymer Additives ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

The combination of solvent and polymer additives synergistically enhances solar cell performance and the stability of small molecule bulk heterojunction solar cells.

scholarly journals Melt-processing of small molecule organic photovoltaics via bulk heterojunction compatibilization

2018 ◽  
Vol 20 (10) ◽  
pp. 2218-2224 ◽  
Author(s):  
Aiman Rahmanudin ◽  
Liang Yao ◽  
Xavier A. Jeanbourquin ◽  
Yongpeng Liu ◽  
Arvindh Sekar ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Melt Processing ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

A specially-designed molecular compatibilizer enables bulk-heterojunction organic photovoltaic devices that tolerate melt processing thus reducing the need for toxic solvents.

Improvement of Interfacial Contacts for New Small-Molecule Bulk-Heterojunction Organic Photovoltaics

2012 ◽  
Vol 24 (39) ◽  
pp. 5368-5373 ◽  
Author(s):  
Andres Garcia ◽  
Gregory C. Welch ◽  
Erin L. Ratcliff ◽  
David S. Ginley ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction

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.

Small molecule BODIPY dyes as non-fullerene acceptors in bulk heterojunction organic photovoltaics

2014 ◽  
Vol 50 (22) ◽  
pp. 2913-2915 ◽  
Author(s):  
Ambata M. Poe ◽  
Andrea M. Della Pelle ◽  
Ayyagari V. Subrahmanyam ◽  
William White ◽  
Guillaume Wantz ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Electron Acceptors

A–D–A small-molecule electron acceptors containing meso-conjugated BODIPY caps were employed in P3HT-based OPV devices, yielding efficiencies as high as 1.51%.

Synergistic Impact of Solvent and Polymer Additives on the Film Formation of Small Molecule Blend Films for Bulk Heterojunction Solar Cells

2015 ◽  
Vol 5 (18) ◽  
pp. 1501121 ◽  
Author(s):  
Caitlin McDowell ◽  
Maged Abdelsamie ◽  
Kui Zhao ◽  
Detlef-M. Smilgies ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Bulk Heterojunction ◽  
Film Formation ◽  
Polymer Additives ◽  
Heterojunction Solar Cells ◽  
Blend Films ◽  
Bulk Heterojunction Solar Cells
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