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Title: Highly efficient organic solar cells with improved vertical donor-acceptor compositional gradient via an inverted off-center spinning method

A novel, yet simple solution fabrication technique to address the trade-off between photocurrent and fill factor in thick bulk heterojunction organic solar cells is described. Lastly, the inverted off-center spinning technique promotes a vertical gradient of the donor–acceptor phase-separated morphology, enabling devices with near 100% internal quantum efficiency and a high power conversion efficiency of 10.95%.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5]
  1. Univ. of Washington, Seattle, WA (United States); Univ. of Electronic Science and Technology of China (UESTC), Chengdu (People's Republic of China)
  2. North Carolina State Univ., Raleigh, NC (United States)
  3. Univ. of Washington, Seattle, WA (United States); Zhejiang Univ. Hangzhou (China)
  4. Univ. of Electronic Science and Technology of China (UESTC), Chengdu (People's Republic of China)
  5. Univ. of Washington, Seattle, WA (United States)
Publication Date:
OSTI Identifier:
1343593
Report Number(s):
DOE-UW-Jen-25
Journal ID: ISSN 0935-9648
Grant/Contract Number:
EE0006710
Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 5; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Research Org:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Contributing Orgs:
Asian Offi ce of Aerospace R&D (No. FA2386-11-1-4072), the Office of Naval Research (No. N00014-14-1-0170), X-ray and SIMS characterization and analysis by NCSU supported by Office of Naval Research (ONR) grant N000141410531. North Carolina State University Graduate Assistance in Areas of National Need (GAANN) fellowship. The Boeing Foundation, China Scholarship Council, Fundamental Research Funds for the Central Universities, and Open Foundation of State Key Laboratory of Electronic Thin Films and Integrated Devices.
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY