Record Details

Photoconductivity measurements in lead phthalocyanine thin films

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Photoconductivity measurements in lead phthalocyanine thin films
 
Creator AMBILY, S
XAVIER, FP
MENON, CS
 
Subject thin films
phthalocyanines
photoconductivity
energy level
 
Description Lead phthalocyanine thin films (PbPc) were prepared by vacuum sublimation under a pressure of 10(-5) Torr. Photoconductive studies as a function of applied voltage, intensity of incident light, temperature and wavelength were carried out. Photocurrent spectra as a function of wavelength indicate peaks around 1.54, 1.98, 2.4, 3.0 and 3.48 eV. These are interpreted as transitions at critical points. From the temperature dependence of photoconductivity measurements, the activation energies 0.074 and 0.46 eV were obtained and 0.68 and 0.46 eV for dark conductivity. The dependence of the intensity of photocurrent yields a slope of m = 0.6, in the photoconductivity equation I-ph proportional to (In)(m). An energy level diagram is drawn for lead phthalocyanine thin films from the photoresponse studies. (C) 1999 .
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-26T10:12:27Z
2011-12-26T12:54:02Z
2011-12-27T05:41:21Z
2011-07-26T10:12:27Z
2011-12-26T12:54:02Z
2011-12-27T05:41:21Z
1999
 
Type Article
 
Identifier MATERIALS LETTERS, 41(1), 5-8
0167-577X
http://dx.doi.org/10.1016/S0167-577X(99)00094-4
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6874
http://hdl.handle.net/10054/6874
 
Language en