Nd:YAG laser ablation characteristics of thin CIGS solar cell films

被引：8

作者：

Lee, S. H. ^{[1
]}

Kim, C. K. ^{[1
]}

In, J. H. ^{[1
]}

Kim, D. S. ^{[1
]}

Ham, H. J. ^{[1
]}

Jeong, S. H. ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Mechatron, Kwangju 500712, South Korea

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2013年 / 113卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Laser Fluence; Shock Wave Velocity; Shadowgraph Image; Ablation Characteristic; Incident Laser Light;

D O I：

10.1007/s00340-013-5477-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This work reports that the ablation characteristics of thin CuIn1-x Ga (x) Se-2 (CIGS) solar cell film differ significantly with elemental composition and laser pulse energy. From in situ shadowgraphs measured during Nd:YAG laser (1,064 nm) irradiation of CIGS films and crater morphologies, it was found that strong surface evaporation is dominant for low Ga concentration films of which band gap is well below the photon energy. As the band gap of CIGS film becomes close to or over the laser photon energy due to increased Ga content, surface absorption diminishes and at low laser energy, laser heating of the film plays an important role. It is demonstrated that for the CIGS films with Ga/(Ga + In) ratio being approximately over 0.2, the laser irradiation leads to solid phase removal of the film due to thermomechanical fracture at low laser energy but to ablative evaporation at elevated energy.

引用

页码：403 / 409

页数：7

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