摘要
利用ZnS、SnS、CuS三种二元硫化物靶,分步溅射制备了铜锌锡硫(CZTS)薄膜,并在不同温度下进行退火。研究了退火温度对薄膜晶体结构、组分、表面形貌及光学特性的影响。结果表明,当退火温度为400℃时,CZTS薄膜中含有Cu_2S及SnS等多种二次相;随着退火温度的升高,二次相的种类逐渐减少,当退火温度为550℃时,薄膜的表面平整致密,二次相种类最少;然而,当退火温度为600℃时,薄膜表面变得粗糙,二次相种类增多。
Cu_2ZnSnS_4（CZTS）thin films are prepared by the step sputtering with three binary-sulfide compound targets of ZnS,SnS,CuS.The annealing is carried out at different temperatures.The influences of annealing temperature on crystal structure,element composition,surface morphology and optical characteristics of CZTS thin films are investigated.The results show that the secondary phases like Cu_2S and SnS are found in the CZTS thin films at the annealing temperature of 400 ℃.With the increase of the annealing temperature,the variety of the secondary phases decreases.When the annealing temperature is 550℃,the thin film surface is smooth and compact and the variety of the secondary phases is the least.However,when the annealing temperature is 600 ℃,the film surface becomes rough and the variety of the secondary phases increases.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第9期311-315,共5页
Laser & Optoelectronics Progress
基金
国家自然科学基金(11474248
61176127
61006085
61274013)
国家国际科技合作重点资助项目(2011DFA62380)
教育部博士点基金(20105303120002)
关键词
激光技术
铜锌锡硫
二元硫化物靶
磁控溅射
退火
laser technique
Cu2ZnSnS4
binary-sulfide compound target
magnetron sputtering
annealing
