期刊
APPLIED PHYSICS LETTERS
卷 94, 期 13, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3110969
关键词
cadmium compounds; filled polymers; II-VI semiconductors; nanocomposites; solar cells; wide band gap semiconductors
资金
- Air Force Office of Scientific Research [FA95500610398]
- National Science Foundation [DMR0702372]
- Asian Office of Aerospace Research and Development [AOARD-08-4086]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0702372] Funding Source: National Science Foundation
We demonstrate a relative improvement in power conversion efficiency of polymer nanocomposite photovoltaic cells consisting of poly(3-hexylthiophene) (P3HT) functionalized CdSe nanocrystals. Thermal deprotection processing of the tert-buthoxycarbonyl moiety in the carbamate ligand surrounding the surface of CdSe nanocrystal significantly shortened the length of the ligand between nanocrystals and between the nanocrystal and the polymer matrix. The resulting device performance was investigated as a function of the composition ratio of P3HT/CdSe and the heating temperature. This simple and straightforward ligand deprotection strategy resulted in a significant increase in current density due to improvement of charge transport between the constituent materials.
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