Optoelectronic performance enhancement in pulsed laser deposited gallium-doped zinc oxide (GZO) films after UV laser crystallization

被引:5
|
作者
Nian, Qiong [1 ,2 ]
Look, David [3 ]
Leedy, Kevin [4 ]
Cheng, Gary J. [1 ,2 ]
机构
[1] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47906 USA
[2] Purdue Univ, Sch Ind Engn, W Lafayette, IN 47906 USA
[3] Wright State Univ, Semicond Res Ctr, Dayton, OH 45435 USA
[4] US Air Force, Res Lab, Dayton, OH 45433 USA
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2018年 / 124卷 / 09期
关键词
POLYCRYSTALLINE SILICON FILMS; TRANSPARENT CONDUCTING OXIDES; THIN-FILMS; OPTICAL-PROPERTIES; PHOTOVOLTAIC APPLICATIONS; ELECTRICAL-PROPERTIES; HIGHLY TRANSPARENT; ZNO; TEMPERATURE; LAYER;
D O I
10.1007/s00339-018-2032-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study investigates the process-microstructure-property relationship during a UV laser crystallization of a transparent conductive layergallium doped zinc oxide (GZO) films after pulsed laser deposition (PLD). UV laser induced crystallization technique is able to apply ultra-fast post-treatment to modify GZO films with better structural and optoelectronics properties, suggesting a potential for large-scale manufacturing. A physical simulation model coupled laser-matter interaction and heat-transfer was utilized to study pulse laser heating and heat dissipation process. The laser crystallized GZO film exhibits low resistivity of similar to 3.2x10(-4)cm, high-Hall mobility of 22cm(2)/Vs, and low sheet resistance of 22/sq. High-transmittance (T) over 90% at 550nm is obtained (with glass substrate). The optoelectronic performance improved mainly attributes to grain boundary modification in the polycrystalline film, e.g., decrease of grain boundary density and passivation of electron trap at grain boundaries.
引用
收藏
页数:9
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