A NOVEL CONTACTLESS AND NONDESTRUCTIVE MEASUREMENT METHOD OF SURFACE RECOMBINATION VELOCITY ON SILICON SURFACES BY PHOTOLUMINESCENCE

被引:4
|
作者
SAITOH, T [1 ]
NISHIMOTO, Y [1 ]
SAWADA, T [1 ]
HASEGAWA, H [1 ]
机构
[1] HOKKAIDO UNIV,DEPT ELECT ENGN,SAPPORO,HOKKAIDO 060,JAPAN
关键词
PHOTOLUMINESCENCE; SURFACE RECOMBINATION VELOCITY; SURFACE STATE; INTERFACE STATE; SOLAR CELL; SILICON; SILICON DIOXIDE;
D O I
10.1143/JJAP.32.272
中图分类号
O59 [应用物理学];
学科分类号
摘要
A novel photoluminescence (PL)-based measurement method for the surface recombination velocity, S, is presented. It consists of detailed measurement of the band-edge photoluminescence efficiency as a function of the excitation intensity, and its subsequent analysis by computer. The measurement principle and the computer analysis procedure are presented, as well as detailed discussion on the underlying recombination physics. As a demonstration, the new method is applied to various unpassivated and passivated Si wafers, giving the values of S under 1 sun condition of 3000 cm/s-50000 cm/s. It is also pointed out that the value of S is considerably reduced by concentrated sunlight. By this method, the value of S under device operation conditions as well as N(ss) distribution can be determined in a contactless and nondestructive fashion.
引用
收藏
页码:272 / 277
页数:6
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