Investigation of GaAs/InGaP superlattices for quantum well solar cells

被引：8

作者：

Magnanini, R. ^{[1
]}

Tarricone, L. ^{[1
]}

Parisini, A. ^{[1
]}

Longo, M. ^{[2
]}

Gombia, E. ^{[3
]}

机构：

[1] Univ Parma, Dipartimento Fis, CNISM, I-43100 Parma, Italy

[2] Univ Parma, Dipartimento Fis, INFM, CNR, I-43100 Parma, Italy

[3] CNR IMEM, I-43010 Parma, Italy

来源：

THIN SOLID FILMS | 2008年 / 516卷 / 20期

关键词：

III-V semiconductors; quantum wells; solar cells;

D O I：

10.1016/j.tsf.2007.12.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Different heterostructures, MOVPE grown by TBAs and TBP, lattice-matched to GaAs and containing a sequence of InGaP/GaAs quantum wells (QWs), were studied for the development of novel photovoltaic devices. Their structural characterisation exhibited a low structural and compositional disorder with a low defect density, also in the case of a consistent number (30) of QW periods. The optical properties, characterised. by excitonic features, show well resolved peaks ascribable to heavy and light hole to electron transitions, in good agreement with theory. The benefit role of the QW region was proved by an extension of the spectral response and a reduction of the reverse dark current. A main limitation to the conversion efficiency is discussed in terms of InGaP non-intentional impurity contamination. (c) 2007 Elsevier BN. All rights reserved.

引用

页码：6734 / 6738

页数：5

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