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Interfacial Recombination for Fast Operation of a Planar Organic/QD Infrared Photodetector
Author(s) -
Osedach Timothy P.,
Zhao Ni,
Geyer Scott M.,
Chang LiangYi,
Wanger Darcy D.,
Arango Alexi C.,
Bawendi Moungi C.,
Bulović Vladimir
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201002589
Subject(s) - materials science , photodetector , planar , quantum dot , optoelectronics , infrared , fullerene , recombination , optics , biochemistry , chemistry , computer graphics (images) , physics , computer science , gene , organic chemistry
A planar infrared photodetector consisting of discrete films of PbS quantum dots (QDs) and the fullerene derivative, PCBM, is reported. A fast recombination process at the PbS QD/PCBM interface enables an improvement in the response speed of greater than two orders‐of‐magnitude over devices consisting only of the QD film. The physical processes governing device operation and performance are explored.