10 x 10 cm2 screen printed back contact cell with a selective emitter

被引：12

作者：

Kress, A ^{[1
]}

Tölle, R ^{[1
]}

Bruton, T ^{[1
]}

Fath, P ^{[1
]}

Bucher, E ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78464 Constance, Germany

来源：

CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000 | 2000年

关键词：

D O I：

10.1109/PVSC.2000.915792

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：

Back contact cells promise a cost reduction for the interconnection of cells to modules. The Emitter Wrap Through concept allows in addition to combine low cost material, surface texture, a selective emitter (alkaline etch for Cz-Si respectively mechanical texturing for mc-Si) together with screen printed contacts as done in this work. The connecting holes are drilled by a laser. Emitter and base region at the cell rear are separated by a screen printable diffusion barrier. Computer simulations assisted the optimisation of the grid design especially in estimating the influence of the busbar regions to the series resistance. An efficiency of 15.8 % was reached on Cz-silicon, which is the highest efficiency reported so far for a low-cost (i. e. no photolitographical steps) back contact cell. We obtained J(SC) of 37.9 mA/cm(2) and V-OC of 600 mV. The internal quantum efficiency was found to be distinctly increased due to the selective emitter on the front.

引用

页码：213 / 216

页数：4

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