Determination of the effective diffusion length of silicon solar cells from photoluminescence

被引：36

作者：

Hinken, David ^{[1
]}

Bothe, Karsten ^{[1
]}

Ramspeck, Klaus ^{[1
]}

Herlufsen, Sandra ^{[1
]}

Brendel, Rolf ^{[1
]}

机构：

[1] ISFH, D-31860 Emmerthal, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 10期

关键词：

diffusion; photoluminescence; solar cells; RECOMBINATION; RADIATION;

D O I：

10.1063/1.3130408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a method to determine the effective diffusion length L-eff of silicon solar cells from photoluminescence (PL) measurements carried out under two different operating conditions. Measuring the photoluminescence emission under open circuit condition (PL-oc), where the solar cell is not contacted at all, and short circuit condition (PL-sc), where the solar cell is held at zero voltage, L-eff directly follows from the ratio of the PL-oc and the PL-sc signals. Detailed knowledge about the optical properties of the experimental setup is not necessary since the optical properties cancel out completely. We explain the theoretical background of our method and derive an analytical description for the PL-oc and the PL-sc luminescence emissions. The applicability of our method is demonstrated by the comparison of effective diffusion lengths from PL measurements with values determined from the analysis of internal quantum efficiency measurements.

引用

页数：6

共 24 条

[1] Injection dependence of spontaneous radiative recombination in crystalline silicon: Experimental verification and theoretical analysis [J].