期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 16, 页码 8105-8110出版社
AMER CHEMICAL SOC
DOI: 10.1021/am402182z
关键词
charge transfer; graphene; quantum dots; photovoltaic devices; polyaniline
资金
- Singapore National Research Foundation [NRF2009NRF-RF001-015, NRF-RF2009-06]
- Singapore National Research Foundation CREATE program Singapore Peking University Research Centre for a Sustainable Low-Carbon Future
- Centre of Excellence for Silicon Technologies (A*Star SERC) [112 351 0003]
A new method to enhance the stability of quantum dots (QDs) in aqueous solution by encapsulating them with conducting polymer polyaniline was reported. The polyaniline-encapsulated QDs were then decorated onto graphene through pi-pi interactions between graphene and conjugated polymer shell of QDs, forming stable polyaniline/QD/graphene hybrid. A testing electronic device was fabricated using the hybrid in order to investigate the photoinduced charge transfer between graphene and encapsulated QDs within the hybrid. The charge transfer mechanism was explored through cyclic voltammetry and spectroscopic studies. The hybrid shows a clear response to the laser irradiation, presenting a great advantage for further applications in optoelectronic devices.
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