TRANSIENT PHOTOCURRENT AND CHARGE-TRANSFER EXCITATION BANDS IN A TIN-PHTHALOCYANINE (SNPC) POLYCRYSTALLINE FILM

Authors
PAN YL CHEN LB WANG Y ZHAO YY LI FM ZHOU HW WAGIKI A YAMASHITA M TAKO T
Citation
Yl. Pan et al., TRANSIENT PHOTOCURRENT AND CHARGE-TRANSFER EXCITATION BANDS IN A TIN-PHTHALOCYANINE (SNPC) POLYCRYSTALLINE FILM, Applied physics A: Materials science & processing, 65(4-5), 1997, pp. 425-428
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Applied physics A: Materials science & processing → ACNP
ISSN journal
09478396
Volume
65
Issue
4-5
Year of publication
1997
Pages
425 - 428
Database
ISI
SICI code
0947-8396(1997)65:4-5<425:TPACEB>2.0.ZU;2-O
Abstract
The dependence upon applied voltage of the transient photoconductive r esponse in the nanosecond region under various excitation light intens ities in an aluminium/tin-phthalocyanine/indium-tin-oxide (Al/alpha-Sn Pc/ITO) sandwich cell is reported. Charge-transfer excitons and Frenke l excitons are revealed by the technique of electric modulation reflec tive spectroscopy. It is suggested that the photoelectric properties d etected in the cell used may result from the dissociations arising bot h from the charge-transfer excitons and also from the Frenkel excitons via multistep thermalization and ionization.