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Title: Molecular packing control enables excellent performance and mechanical property of blade-cast all-polymer solar cells

Journal Article · · Nano Energy
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [1];  [4];  [2];  [3];  [3];  [3];  [5]
  1. Xi’an Jiaotong Univ. (China)
  2. Univ. of Southern Mississippi, Hattiesburg, MS (United States)
  3. South China Univ. of Technology, Guangzhou (China)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. South China Univ. of Technology, Guangzhou (China); Xi’an Jiaotong Univ. (China)

All-polymer solar cells (all-PSCs) are the most promising power generators for flexible and portable devices due to excellent morphology stability and outstanding mechanical property. Prior work suggests high crystallinity is beneficial to device performance but detrimental to mechanical property, therefore identifying the optimized ratio between crystalline and amorphous domains becomes important. In this work, we demonstrated highly efficient and mechanically robust all-PSCs by blade-coating technology in ambient environment based on PTzBI:N2200 system. By controlling the aggregation in solution state and ultrafast film formation process, a weakly ordered molecular packing morphology as well as small phase separation is obtained, which leads to not only the good photovoltaic performance (8.36%-one of the best blade-cast device in air) but also prominent mechanical characteristic. The controlled film reflects a remarkable elongation with the crack onset strain of 15.6%, which is the highest result in organic solar cells without adding elastomers. These observations indicate the great promise of the developed all-PSCs for practical applications toward large-area processing technology.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Ministry of Science and Technology; National Natural Science Foundation of China (NSFC); China Postdoctoral Science Foundation
Grant/Contract Number:
AC02-76SF00515; 2016YFA0200700; 21504066; 21534003; 21875182; 21704082; 2017M623162; 201629; AC02-05CH11231; DEAC02-05CH11231
OSTI ID:
1529379
Alternate ID(s):
OSTI ID: 1637186
Journal Information:
Nano Energy, Vol. 59, Issue C; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (1)

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