New Generation Transparent LPCVD ZnO Electrodes for Enhanced Photocurrent in Micromorph Solar Cells and Modules

被引：7

作者：

Ding, Laura ^{[1
]}

Boccard, Mathieu ^{[1
]}

Bugnon, Gregory ^{[1
]}

Benkhaira, Mustapha ^{[1
]}

Despeisse, Matthieu ^{[1
]}

Sculati-Meillaud, Fanny ^{[1
]}

Nicolay, Sylvain ^{[1
]}

Losio, Paolo A. ^{[2
]}

Kluth, Oliver ^{[2
]}

Carroy, Perrine ^{[2
]}

Caglar, Onur ^{[2
]}

Ballif, Christophe ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Photovolta & Thin Film Elect, Inst Microengn, CH-2000 Neuchatel, Switzerland

[2] Oerlikon Solar Ltd, CH-9477 Trubbach, Switzerland

来源：

IEEE JOURNAL OF PHOTOVOLTAICS | 2012年 / 2卷 / 02期

关键词：

Bilayer; low-pressure chemical vapor deposition (LPCVD); micromorph; zinc oxide; THIN;

D O I：

10.1109/JPHOTOV.2011.2179415

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：

ZnO bilayer films were deposited by low-pressure chemical vapor deposition in a single process step by controlling the differential doping of the nucleation and bulk parts of the layers. The resulting 2-mu m-thick films are characterized by low free-carrier absorption and electron mobility over 40 cm(2)/Vs. They, therefore, combine high transparency in the infrared region and moderate sheet resistance that can be lowered below 20 Omega/sq. These properties make ZnO bilayers ideal candidates as electrodes for the development of micromorph thin-film solar cells with enhanced photogenerated current. The potential of such bilayer front electrodes for a further power improvement and cost reduction of industrial micromorph tandem modules is currently investigated at Oerlikon Solar. The first experiments already show a promising gain in the bottom mu c-Si:H cell photogenerated current compared with the current generated with modules deposited on standard uniformly doped ZnO single-layer front contacts.

引用

页码：88 / 93

页数：6

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