Doping Effect of Viologen on Photoconductive Device made of Poly(p-phenylenevinylene)

Title
Doping Effect of Viologen on Photoconductive Device made of Poly(p-phenylenevinylene)
Authors
Lee, C.H.
Keywords
PHOTOINDUCED ELECTRON-TRANSFER, DONOR-ACCEPTOR HETEROJUNCTIONS, CONDUCTING POLYMER
Issue Date
1998-06-01
Publisher
Applied Physics Letters
Abstract
We report the photovoltaic properties of the donor–acceptor composite system of poly (p-phenylenevinylene! ~PPV! and viologen. We observed the significant enhancement of photocurrent with increasing the doping ratio of viologen. The maximum photocurrent of viologen-doped PPV was nine times as high as that of the pristine PPV. The maximum quantum yield and photosensitivity are 13% ~electron/photon! and 0.05 A/W, respectively, at low bias voltage ~22 V!. The increase of photocurrent is explained with the efficient charge separation that resulted from the transfer of photoexcited electrons from PPV to viologen. The mixture of PPV and viologen can be used as a sensitive photodiode material.
URI
http://dspace.inha.ac.kr/handle/10505/20155
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
Files in This Item:
Doping.pdfDownload

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse