New 3,8-difluoro indoloindole-based copolymers for organic solar cell
- Authors
- Lee, Gyeong Seok; Shin, Hee Jeong; Shome, Sanchari; Park, Ji-Hyun; Ko, Seo-Jin; Choi, Hyosung; Kim, Yun-Hi
- Issue Date
- Apr-2021
- Publisher
- WILEY
- Keywords
- benzothiadiazole acceptors; indoloindole; novel copolymer; organic electronics; organic solar cells; power conversion efficiency
- Citation
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.45, no.5, pp.7806 - 7813
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH
- Volume
- 45
- Number
- 5
- Start Page
- 7806
- End Page
- 7813
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142130
- DOI
- 10.1002/er.6365
- ISSN
- 0363-907X
- Abstract
- The performance of an array of donor-acceptor based bulk heterojunction (BHJ) polymer solar cells (PSC) containing indoloindole as a key donor block with varying degrees of fluorinated benzothiadiazole (BT) as an acceptor block is reported. Fluorination of BT can enhance crystallinity and planarity of the polymer backbone due to intramolecular F-S interactions. This also leads to deeper highest occupied molecular orbital (HOMO) energy levels leading to high J(SC) and V-OC. The PSC properties of this series of new copolymer donors blended with fullerene acceptors show a homogeneous and uniform fibrous network in the blend film. The most homogeneous film was achieved with monofluorinated BT (PFDHI-TFT) that resulted in better charge extraction pathway leading to high power conversion efficiency (PCE). The solar cell using PFDHI-TFT as donor and fullerene acceptor showed PCE of 5.98% with V-OC of 0.80 V, J(SC) of 10.56 mA cm(-2), and fill factor (FF) of 0.71, respectively, under AM 1.5G illumination (100 mW cm(-2)) in the absence of annealing.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 자연과학대학 > 서울 화학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.