Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 17, Pages 9278-9284Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta01277e
Keywords
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Funding
- National Natural Science Foundation of China [21204054, 51303118, 91333204, 21442005]
- Natural Science Foundation of Jiangsu Province [BK20130289]
- Ph.D. Programs Foundation of Ministry of Education of China [20133201120008]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Scientific Research Foundation for Returned Scholars, Ministry of Education of China
- Beijing National Laboratory for Molecular Sciences [20140112]
- Research Program of the Educational Bureau of Zhejiang Province of China [20130467]
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An alcohol-soluble fullerene derivative functionalized with a crown-ether end group in its side chain (denoted as PCBC) was synthesized and applied as a cathode buffer layer in planar p-i-n perovskite solar cells and bulk-heterojunction polymer solar cells. It is found that the introduction of the PCBC cathode buffer layer can greatly improve the photovoltaic performance of the planar p-i-n perovskite solar cells based on CH3NH3PbI3-xClx with power conversion efficiency (PCE) reaching 15.08%. In addition, the bulk-heterojunction polymer solar cells based on PBDTTT-C-T:PC70BM with the PCBC cathode buffer layer also showed a higher PCE of 7.67%, which is improved in comparison with the traditional device with the Ca/Al cathode. This work indicates that PCBC is a promising solution-processable cathode buffer layer material for application in both planar p-i-n perovskite solar cells and bulk-heterojunction polymer solar cells.
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