High-Performance Organic Photovoltaics Incorporating an Active Layer with a Few Nanometer-Thick Third-Component Layer on a Binary Blend Layer

Hao Wen Cheng, Chien Yao Juan, Anisha Mohapatra, Chung Hao Chen, Yu Che Lin, Bin Chang, Pei Cheng, Hao Cheng Wang, Chih Wei Chu, Yang Yang, Kung Hwa Wei*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, a universal approach toward constructing a new bilayer device architecture, a few-nanometer-thick third-component layer on a bulk-heterojunction (BHJ) binary blend layer, has been demonstrated in two different state-of-the-art organic photovoltaic (OPV) systems. Through a careful selection of a third component, the power conversion efficiency (PCE) of the device based on PM6/Y6/layered PTQ10 layered third-component structure was 16.8%, being higher than those of corresponding devices incorporating the PM6/Y6/PTQ10 BHJ ternary blend (16.1%) and the PM6/Y6 BHJ binary blend (15.5%). Also, the device featuring PM7/Y1-4F/layered PTQ10 layered third-component structure gave a PCE of 15.2%, which is higher than the PCEs of the devices incorporating the PM7/Y1-4F/PTQ10 BHJ ternary blend and the PM7/Y1-4F BHJ binary blend (14.2 and 14.0%, respectively). These enhancements in PCE based on layered third-component structure can be attributed to improvements in the charge separation and charge collection abilities. This simple concept of the layered third-component structure appears to have great promise for achieving high-performance OPVs.

Original languageAmerican English
Pages (from-to)2207-22115
Number of pages9
JournalNano letters
DOIs
StatePublished - 10 Mar 2021

Keywords

  • bulk heterojunction ternary blend
  • layered third component
  • layered third-component layer structures
  • organic photovoltaics

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