Loss analysis of 22% efficient industrial PERC solar cells

被引：51

作者：

Mueller, Matthias ^{[1
,2
]}

Fischer, Gerd ^{[1
]}

Bitnar, Bernd ^{[1
]}

Steckemetz, Stefan ^{[1
]}

Schiepe, Roman ^{[1
]}

Muehlbauer, Maria ^{[1
]}

Koehler, Rene ^{[1
]}

Richter, Philipp ^{[1
]}

Kusterer, Christian ^{[1
]}

Oehlke, Alexander ^{[1
]}

Schneiderloechner, Eric ^{[1
]}

Straeter, Hendrik ^{[1
]}

Wolny, Franziska ^{[1
]}

Wagner, Matthias ^{[1
]}

Palinginis, Phedon ^{[1
]}

Neuhaus, D. Holger ^{[1
]}

机构：

[1] SolarWorld Innovatioins GmbH, Berthelsdorferstr 111A, D-09599 Freiberg, Germany

[2] Tech Univ Bergakad Freiberg, Inst Appl Phys, Leipziger Str 23, D-09599 Freiberg, Germany

来源：

7TH INTERNATIONAL CONFERENCE ON SILICON PHOTOVOLTAICS, SILICONPV 2017 | 2017年 / 124卷

关键词：

PERC; loss analysis; device simulation;

D O I：

10.1016/j.egypro.2017.09.322

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：

The efficiency record of industrial type PERC solar cells exceeded 22% at the turn of the year 2015 to 2016. Our best screen printed PERC solar cell reached 22.04% efficiency while the best cell batch showed a very narrow efficiency distribution. A detailed electrical and optical loss analysis of those industrial type high efficiency PERC solar cells is carried out which enables further optimization and strategic improvements. A variety of characterization data allows for a recombination current density, resistance and optical loss analysis based on numerical device simulation, analytical calculations and raytracing, respectively. The main recombination losses at maximum power point (MPP) occur in the homogenous and selective diffused regions of the emitter. A series resistance loss analysis is analytically performed. The emitter contribution to the lumped series resistance dominates the series resistance losses. The optical loss analysis performed with raytracing shows main reflection and absorption losses in the rear metal layer which is partly due to the light trapping capability of the PERC cells. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：131 / 137

页数：7

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