3D Lifetime Tomography Reveals How CdCl2 Improves Recombination Throughout CdTe Solar Cells

被引：37

作者：

Barnard, Edward S. ^{[1
,2
]}

Ursprung, Benedikt ^{[2
]}

Colegrove, Eric ^{[3
]}

Moutinho, Helio R. ^{[3
]}

Borys, Nicholas J. ^{[1
]}

Hardin, Brian E. ^{[2
]}

Peters, Craig H. ^{[2
]}

Metzger, Wyatt K. ^{[3
]}

Schuck, P. James ^{[1
]}

机构：

[1] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA

[2] PLANT PV Inc, Alameda, CA 94501 USA

[3] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 03期

关键词：

GRAIN-BOUNDARIES; 2-PHOTON MICROSCOPY; DIFFUSION; IMPACT;

D O I：

10.1002/adma.201603801

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using two-photon tomography, carrier lifetimes are mapped in polycrystalline CdTe photovoltaic devices. These 3D maps probe subsurface carrier dynamics that are inaccessible with traditional optical techniques. They reveal that CdCl2 treatment of CdTe solar cells suppresses nonradiative recombination and enhances carrier lifetimes throughout the film with substantial improvements particularly near subsurface grain boundaries and the critical buried p-n junction.

引用

页数：7

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