ZnO/polyaniline based inorganic/organic hybrid structure: Electrical and photoconductivity properties

被引:120
作者
Mridha, S. [1 ]
Basak, D. [1 ]
机构
[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, W Bengal, India
关键词
D O I
10.1063/1.2898399
中图分类号
O59 [应用物理学];
学科分类号
摘要
Single layer ZnO/polyaniline (PANI) inorganic/organic hybrid structure fabricated on glass substrate by depositing polyaniline film on the sol-gel ZnO thin film shows a rectifying behavior indicating the formation of a diode. The current transport mechanism is modeled through an energy band diagram. The heterojunction is sensitive to UV illumination. The photo-to-dark current ratio of the junction is about 46 for -5 V bias. The photoresponse parameters of the diode are found to be better than those of only ZnO film of similar thickness. The results indicate that the ZnO/PANI hybrid structure might be promising for the UV photodetection applications. (c) 2008 American Institute of Physics.
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页数:3
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共 29 条
[1]   Photoresponse of sol-gel-synthesized ZnO nanorods [J].
Ahn, SE ;
Lee, JS ;
Kim, H ;
Kim, S ;
Kang, BH ;
Kim, KH ;
Kim, GT .
APPLIED PHYSICS LETTERS, 2004, 84 (24) :5022-5024
[2]   Photoresponse of n-ZnO/p-SiC heterojunction diodes grown by plasma-assisted molecular-beam epitaxy -: art. no. 241108 [J].
Alivov, YI ;
Özgür, Ü ;
Dogan, S ;
Johnstone, D ;
Avrutin, V ;
Onojima, N ;
Liu, C ;
Xie, J ;
Fan, Q ;
Morkoç, H .
APPLIED PHYSICS LETTERS, 2005, 86 (24) :1-3
[3]   Observation of 430 nm electroluminescence from ZnO/GaN heterojunction light-emitting diodes [J].
Alivov, YI ;
Van Nostrand, JE ;
Look, DC ;
Chukichev, MV ;
Ataev, BM .
APPLIED PHYSICS LETTERS, 2003, 83 (14) :2943-2945
[4]   Optical spectroscopic studies of composites of conducting PANI with CdSe and ZnO nanocrystals [J].
Bhat, S. V. ;
Vivekchand, S. R. C. .
CHEMICAL PHYSICS LETTERS, 2006, 433 (1-3) :154-158
[5]   POLYANILINE - PROTONIC ACID DOPING OF THE EMERALDINE FORM TO THE METALLIC REGIME [J].
CHIANG, JC ;
MACDIARMID, AG .
SYNTHETIC METALS, 1986, 13 (1-3) :193-205
[6]  
DU TG, 2006, APPL PHYS LETT, V89, P52113
[7]   Montmorillonite clay nanocomposites of sulfonic acid doped thermoreversible polyaniline gel: Physical and mechanical properties [J].
Garai, Ashesh ;
Kuila, Biplab K. ;
Nandi, Arun K. .
MACROMOLECULES, 2006, 39 (16) :5410-5418
[8]   Hydrogen: A relevant shallow donor in zinc oxide [J].
Hofmann, DM ;
Hofstaetter, A ;
Leiter, F ;
Zhou, HJ ;
Henecker, F ;
Meyer, BK ;
Orlinskii, SB ;
Schmidt, J ;
Baranov, PG .
PHYSICAL REVIEW LETTERS, 2002, 88 (04) :4
[9]   Temperature-dependent characteristics of Pt Schottky contacts on n-type ZnO [J].
Ip, K ;
Heo, YW ;
Baik, KH ;
Norton, DP ;
Pearton, SJ ;
Kim, S ;
LaRoche, JR ;
Ren, F .
APPLIED PHYSICS LETTERS, 2004, 84 (15) :2835-2837
[10]  
Joshi N., 1990, PHOTOCONDUCTIVITY AR