Implication of molecular orientation on charge transport and gas sensing characteristics of cobalt-phthalocyanine thin films

被引：19
|
作者：
Singh, Ajay [1 ]
Samanta, S. [1 ]
Kumar, Arvind [1 ]
Debnath, A. K. [1 ]
Prasad, R. [1 ]
Veerender, P. [1 ]
Balouria, Vishal [1 ,2 ]
Aswal, D. K. [1 ]
Gupta, S. K. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Tech Phys Div, Bombay 400085, Maharashtra, India
[2] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
来源：
ORGANIC ELECTRONICS | 2012年 / 13卷 / 11期
关键词：
Organic semiconductors; Thin films; Space charge limited conduction; Gas sensors; TRANSISTORS; ALIGNMENT; EPITAXY;
D O I：
10.1016/j.orgel.2012.07.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Charge transport and gas sensing characteristics of cobalt phthalocyanine films deposited along (ATB) and perpendicular (PTB) to the natural twin boundaries of (001) LaAlO3 substrate have been investigated. The charge carrier mobility of ATB films (similar to 5 cm(2) V-1 s(-1)) is five orders of magnitude higher compared to that of PTB films (similar to 7 x 10(-5) cm(2) V-1 s(-1)), suggesting that twin boundaries acts like a template for ordering of molecules. The ATB films on exposure to ammonia showed a reversible increase of resistance, with fast response and recovery. In contrast PTB films showed same sensitivity, but exhibits base resistance drift along with sluggish response. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：2600 / 2604
页数：5
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