Low-cost back contact silicon solar cells

被引：16

作者：

Kress, A ^{[1
]}

Kühn, R ^{[1
]}

Fath, P ^{[1
]}

Willeke, GP ^{[1
]}

Bucher, E ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 1999年 / 46卷 / 10期

关键词：

back contact solar cell; commercially applicable process; EWT; low-cost process;

D O I：

10.1109/16.791988

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Back-contacted solar cells offer multiple advantages in regard of reducing module assembling costs and avoiding grid shadowing losses. The investigated emitter-wrap-through (EWT) device design has an electrical connection of the front emitter and the rear emitter grid in form of small holes drilled into the crystalline silicon wafer. The thus obtained cell structure is especially suitable for low-cost base material with small minority carrier diffusion lengths. Different industrially applicable solar cell manufacturing processes for EWT devices are described and compared. The latest experimental results are presented and interpreted; especially the photo-current is found to be distinctly increased. The relation between open circuit voltage and rear side passivation is discussed based on two-dimensional (2-D) computer simulations.

引用

页码：2000 / 2004

页数：5