期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 22, 页码 14293-14300出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b03974
关键词
inverted organic solar cells; cathode interlayer; fulleropyrrolidine; electron-collecting; interfacial modification
资金
- National Key Basic Research Program of China (973 Program) [2014CB648300]
- National Natural Science Foundation of China [21422402, 20904024, 51173081, 61136003]
- Natural Science Foundation of Jiangsu Province [BK20140060, BK20130037, BM2012010]
- Program for Jiangsu Specially-Appointed Professors [RK030STP15001]
- Program for New Century Excellent Talents in University [NCET-13-0872]
- Specialized Research Fund for the Doctoral Program of Higher Education [20133223110008, 20113223110005]
- Synergetic Innovation Center for Organic Electronics and Information Displays
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- NUPT 1311 Project
- Six Talent Plan [2012XCL035]
- 333 Project [BRA2015374]
- Qing Lan Project of Jiangsu Province
A novel fulleropyrrolidine derivative, named FPNOH, was designed; synthesized, and utilized as an efficient electron-collecting (EC) layer for inverted organic solar cells (i-OSCs). The grafted diethanolamino-polar moieties can hot only trigger its function as an EC interlayer, but also induce orthogonal solubility that guarantees subsequent multilayer processing without interfacial mixing: A higher power conversion efficiency (PCE) value of 8.34% was-achieved for i-OSC devices with ITO/FPNOH EC electrode,, compared to that of the sol-gel ZnO based reference devices with an optimized PCE value of 7.92%. High efficiency exceeding 7.7% was still achieved even for the devices with a relatively thick FPNOH film (16.9 nm). It is worthwhile to mention that this kind of material exhibits less thickness dependent performance, in contrast to widely utilized p-type conjugated, polyelectrolytes (CPEs) as well as the nonconjugated polyelectrolytes (NCPEs). Further investigation on illuminating intensity dependent parameters revealed the role of FPNOH in reducing interfacial trap-induced recombination at,the ITO/active layer interface.
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