Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 2, Pages 739-744Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404423k
Keywords
hybrid buffer layer; inverted OSC; TiO2; 1,10-phenanthroline
Funding
- National Natural Science Foundation of China [51273208, 51202264]
- Hundred Talent Program of the Chinese Academy of Sciences
- Starting Research Fund of Team Talent at NIMTE [Y10801A01]
- Ningbo Natural Science Foundation of China [2012A610114]
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We reported a significant improvement in the efficiency of organic solar cells by introducing hybrid TiO2:1,10-phenanthroline as a cathode buffer layer. The devices based on polymer thieno[3,4-b]thiophene/benzodithiophene:[6,6]-phenyl C-71-butyric acid methyl ester (PTB7:PC71BM) with hybrid buffer layer exhibited an average power conversion efficiency (PCE) as high as 8.02%, accounting for 20.8% enhancement compared with the TiO2 based devices. The cathode modification function of this hybrid material could also be extended to the poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester (P3HT:PC61BM) system. We anticipate that this study will stimulate further research on hybrid materials to achieve more efficient charge collection and device performance.
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