Towards ultra-thin CdTe solar cells using MOCVD

被引：68

作者：

Jones, E. W. ^{[1
,2
]}

Barrioz, V. ^{[1
]}

Irvine, S. J. C. ^{[1
]}

Lamb, D. ^{[1
]}

机构：

[1] OpTIC Technium NEWI, CSER, St Asaph LL17 OJD, Wales

[2] Bangor Univ, Sch Chem, Bangor LL57 2UW, Gwynedd, Wales

来源：

THIN SOLID FILMS | 2009年 / 517卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

Metalorganic chemical vapour deposition; Cadmium compounds; Semiconducting II-VI materials; Solar cells; Ultra-thin absorbers; Cadmium zinc sulfide; FILM CDTE; CDS/CDTE;

D O I：

10.1016/j.tsf.2008.10.093

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was made on very thin CdTe absorber <1 mu m layers to investigate limitations in CdTe collection efficiency. Metal organic chemical vapour deposition (MOCVD) was used to deposit cadmium sulfide (CdS), cadmium zinc sulfide (Cd0.9Zn0.1S) and cadmium telluride (CdTe). Improvements in photon collection in the blue, where the absorption length is shorter, have been achieved using a wider band gap Cd0.9Zn0.1S ternary.. alloy to replace CdS as the window layer. Solar cell capacitance simulator (SCAPS) modelling software [M. Burgelman, P. Nollet, S. Degrave, Thin Solid Films, 361-362 (2000) 527-532] has been used to calculate device parameters as a function of the absorber layer thickness (controlled by in situ using laser reflectometry). One feature of the MOCVD grown devices is the apparent absence of pin-holes, demonstrated by growth of an ultra-thin absorber (200 nm) with conversion efficiency of nearly 4%. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2226 / 2230

页数：5

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