Oxide Heterostructures for Efficient Solar Cells

被引：112

作者：

Assmann, Elias ^{[1
]}

Blaha, Peter ^{[2
]}

Laskowski, Robert ^{[2
]}

Held, Karsten ^{[1
]}

Okamoto, Satoshi ^{[3
]}

Sangiovanni, Giorgio ^{[1
,4
]}

机构：

[1] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[2] Vienna Univ Technol, Inst Mat Chem, A-1040 Vienna, Austria

[3] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[4] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 07期

关键词：

INTERFACE; SUPERLATTICES; TEMPERATURE; INSULATOR;

D O I：

10.1103/PhysRevLett.110.078701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose an unexplored class of absorbing materials for high-efficiency solar cells: heterostructures of transition-metal oxides. In particular, LaVO3 grown on SrTiO3 has a direct band gap similar to 1.1 eV in the optimal range as well as an internal potential gradient, which can greatly help to separate the photo-generated electron-hole pairs. Furthermore, oxide heterostructures afford the flexibility to combine LaVO3 with other materials such as LaFeO3 in order to achieve even higher efficiencies with band-gap graded solar cells. We use density-functional theory to demonstrate these features. DOI: 10.1103/PhysRevLett.110.078701

引用

页数：5

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