Electrical transport studies in nanocrystalline CdSe/SiO2 composite films

被引：13
|
作者：
Bera, SK
Chaudhuri, S
Gupta, RP
Pal, AK [1 ]
机构：
[1] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, W Bengal, India
[2] Cent Elect Engn Res Inst, Pilani 333031, Rajasthan, India
来源：
THIN SOLID FILMS | 2001年 / 382卷 / 1-2期
关键词：
nanocrystalline films; cadmium selenide; variable range hopping;
D O I：
10.1016/S0040-6090(00)01775-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
SiO2/CdSe/SiO2 composite films in nanocrystalline form were deposited on quartz substrates at similar to 20 Pa with deposition temperatures ranging from 220 to 240 K using a multi-target magnetron sputtering system. Optical, electrical, and microstructural (TEM and AFM) studies were carried out on the composite films. Studies of the variation of conductivity with temperature indicated Efros hopping within the Coulomb gap to be the predominant carrier transport process in the composite films. Furthermore, a crossover from a 'soft' to a 'hard' Coulomb gap was noticed with lowering of temperature. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：86 / 94
页数：9
相关论文
共 50 条
  • [1] Charge transport in CdSe nanocrystalline sublayers of SiOx/CdSe multilayers and composite SiOx-CdSe thin films
    Nesheva, D
    Levi, Z
    Pamukchieva, V
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (17) : 3967 - 3974
  • [2] Structure and electrical transport in films of Ge nanoparticles embedded in SiO2 matrix
    Ionel Stavarache
    Ana-Maria Lepadatu
    Adrian V. Maraloiu
    Valentin S. Teodorescu
    Magdalena Lidia Ciurea
    Journal of Nanoparticle Research, 2012, 14
  • [3] Structure and electrical transport in films of Ge nanoparticles embedded in SiO2 matrix
    Stavarache, Ionel
    Lepadatu, Ana-Maria
    Maraloiu, Adrian V.
    Teodorescu, Valentin S.
    Ciurea, Magdalena Lidia
    JOURNAL OF NANOPARTICLE RESEARCH, 2012, 14 (07)
  • [4] Photocatalytic activities of Ce or Co doped nanocrystalline TiO2 SiO2 composite films
    Yao, Yao
    Zhao, Nan
    Feng, Ji-jun
    Yao, Ming-ming
    Li, Fang
    CERAMICS INTERNATIONAL, 2013, 39 (04) : 4735 - 4738
  • [5] PROTON AND SODIUM TRANSPORT IN SIO2 FILMS
    HOFSTEIN, SR
    IEEE TRANSACTIONS ON ELECTRON DEVICES, 1967, ED14 (11) : 749 - +
  • [6] Infrared Reflectivity Studies On Composite HfO2/SiO2 Thin Films
    Bhatt, Himal
    Deo, M. N.
    Sahoo, N. K.
    Kamble, N. M.
    Tokas, R. B.
    Thakur, S.
    INTERNATIONAL CONFERENCE ON PHYSICS OF EMERGING FUNCTIONAL MATERIALS (PEFM-2010), 2010, 1313 : 343 - +
  • [7] Origin of infrared photoluminescence of nanocrystalline Si in SiO2 films
    Takahashi, Hiroshi
    Nishimura, Toshio
    Hashimoto, Yusuke
    Takahashi, Shinichi
    Kuwano, Hiroshi
    1600, JJAP, Tokyo, Japan (39):
  • [8] Origin of infrared photoluminescence of nanocrystalline Si in SiO2 films
    Takahashi, H
    Nishimura, T
    Hashimoto, Y
    Takahashi, S
    Kuwano, H
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2000, 39 (6A): : 3474 - 3477
  • [9] Optical properties of CdSe and CdTe nanoparticles embedded in SiO2 films
    Dayal, PB
    Mehta, BR
    Paulson, PD
    PROGRESS IN COMPOUND SEMICONDUCTOR MATERIALS IV-ELECTRONIC AND OPTOELECTRONIC APPLICATIONS, 2005, 829 : 389 - 394
  • [10] Oxygen and indium diffusion into SiO2 encapsulated polycrystalline CdSe films
    Langford, RM
    Lee, MJ
    Wright, SW
    Judge, CP
    Chater, RJ
    Tate, TJ
    JOURNAL OF ELECTRONIC MATERIALS, 2001, 30 (08) : 925 - 930
12345