publication . Article . 2012

Effect of iodine doping of phthalocyanine on the photocurrent generation in a phthalocyanine/C_<60> heterojunction

Mizuta, Shinsei; Iyota, Masatoshi; Tanaka, Senku; Hiromitsu, Ichiro;
Open Access English
  • Published: 01 Jun 2012 Journal: Thin Solid Films, volume 520, issue 17, pages 5,761-5,769 (issn: 0040-6090, Copyright policy)
  • Publisher: Elsevier
Abstract
Photocurrent generation in an indium?tin oxide (ITO)/iodine-doped Ni-phthalocyanine (NiPc-I_x)/C_<60>/In/Al heterojunction device with x~1 was studied. By keeping the device in air after preparation, the device slowly reached a stationary state in which the sign of the photocurrent is opposite to that of a non-doped ITO/NiPc/C_<60>/In/Al device although the rectification direction for the dark current is the same. By a simulation of incident photon-to-current conversion efficiency spectra and a measurement of internal electric field by electroabsorption spectroscopy, it was elucidated that, in the doped device, the band bending near the phthalocyanine/C_<60> int...
Subjects
free text keywords: Organic device, Heterojunction, Doped organic semiconductor, Charge transfer complex, Electroabsorption
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Article . 2012
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