Influence of CdCl2 treatment on structural and optical properties of vacuum evaporated CdTe thin films

被引：44

作者：

Lalitha, S ^{[1
]}

Sathyamoorthy, R ^{[1
]}

Senthilarasu, S ^{[1
]}

Subbarayan, A ^{[1
]}

机构：

[1] Kongunadu Arts & Sci Coll, R&D Dept Phys, Coimbatore 29, Tamil Nadu, India

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2006年 / 90卷 / 06期

关键词：

CdTe; CdCl2; treatment; optical band gap; thin films;

D O I：

10.1016/j.solmat.2005.04.006

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this article we have discussed the structural, optical properties of vacuum evaporated CdTe thin films before and after CdCl2 treatment. The CdTe thin films were prepared by vacuum evaporation. Films were prepared under the vacuum of 10(-6) Torr. The structural studies have been performed by the X-ray diffraction (XRD) technique. The XRD analysis of vacuum evaporated CdTe films reveals that the structure of films is polycrystalline in nature. However, the crystallinity has been improved after the CdCl2, treatment as shown by an increase of the diffraction peak intensities. This is due to the enhancement in the atomic mobility of CdTe. The optical properties of the CdTe thin films have been studied by the spectrophotometer in the 300-800 nm wavelength range. It is observed that the optical band gap energy is highly dependent on CdCl2, treatments. The optical transitions in these films are found to be direct and allowed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：694 / 703

页数：10

共 52 条

[1] Dependence of CdS/CdTe thin film solar cell characteristics on the processing conditions [J].

AlAllak, HM ;

Brinkman, AW ;

Richter, H ;

Bonnet, D .

JOURNAL OF CRYSTAL GROWTH, 1996, 159 (1-4) :910-915

[2] THERMAL EFFECTS ON STRUCTURAL CHARACTERIZATION OF EVAPORATED CDTE-FILMS DURING AND AFTER DEPOSITION [J].

ASHOUR, A ;

EBEID, MR ;

ELKADRY, N ;

AHMED, MF ;

RAMADAN, AA .

APPLIED SURFACE SCIENCE, 1995, 89 (02) :159-168

[3] Characterization of a CdZnTe/CdTe heterostructure system prepared by Zn diffusion into a CdTe thin film [J].

Bakr, NA .

JOURNAL OF CRYSTAL GROWTH, 2002, 235 (1-4) :217-223

[4] THIN-FILM CDS/CDTE SOLAR-CELL WITH 15.8-PERCENT EFFICIENCY [J].

BRITT, J ;

FEREKIDES, C .

APPLIED PHYSICS LETTERS, 1993, 62 (22) :2851-2852

[5] The effects of inclusion of iodine in CdTe thin films on material properties and solar cell performance [J].

Chaure, NB ;

Samantilleke, AP ;

Dharmadasa, IM .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2003, 77 (03) :303-317

[6] THIN-FILM JUNCTIONS OF CADMIUM TELLURIDE BY METALORGANIC CHEMICAL VAPOR-DEPOSITION [J].

CHU, TL ;

CHU, SS ;

FEREKIDES, C ;

BRITT, J ;

WU, CQ .

JOURNAL OF APPLIED PHYSICS, 1992, 71 (08) :3870-3876

[7] Processing of CdTe thin films by the stacked elemental layer method: compound formation and physical properties [J].

Cruz, LR ;

Matson, R ;

de Avillez, RR .

MATERIALS LETTERS, 2001, 47 (1-2) :63-70

[8] Characterisation of in-situ thermally evaporated CdS/CdTe thin film solar cells with Ni-P back contacts [J].

Duke, S ;

Miles, RW ;

Pande, PC ;

Spoor, S ;

Ghosh, B ;

Datta, PK ;

Carter, MJ ;

Hill, R .

JOURNAL OF CRYSTAL GROWTH, 1996, 159 (1-4) :916-919

[9] AN ELECTROREFLECTANCE STUDY OF CDTE [J].

ENLOE, WS ;

PARKER, JC ;

VESPOLI, J ;

MYERS, TH ;

HARPER, RL ;

SCHETZINA, JF .

JOURNAL OF APPLIED PHYSICS, 1987, 61 (05) :2005-2010

[10] CdTe/CdS solar cells on flexible molybdenum substrates [J].

Enríquez, JP ;

Mathew, X ;

Hernández, GP ;

Pal, U ;

Magaña, C ;

Acosta, DR ;

Guardian, R ;

Toledo, JA ;

Puente, GC ;

Carvayar, JAC .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2004, 82 (1-2) :307-314

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