丝网印刷法制备PbS薄膜研究  

Study on PbS Thin Films Fabricated by Screen Printing Method

作　　者：徐惠芳[1] 欧阳燕[1] 詹福南 张建军[1] 

机构地区：[1]南昌航空大学材料科学与工程学院,南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2015年第2期70-74,共5页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：江西省自然科学基金(20122BAB206013)

摘　　要：采用有机熔盐法合成纳米PbS前驱粉体。使用松油醇作分散试剂配置印刷浆料，采用丝网印刷技术在普通玻璃片上沉积PbS薄膜层，并对PbS薄膜层进行退火处理，采用XRD、SEM、紫外一可见光谱和荧光光谱对所制备的PbS薄膜进行了表征。XRD结果显示所制备的样品只有PbS物相。SEM结果表明：所制备的PbS薄膜中，PbS纳米晶呈棒状，分布较均匀，其直径大约为100nm左右，长度大约2—5斗m，但较疏松。通过丝网印刷工艺研究结果表明：随着丝网印刷次数的增加，PbS薄膜的厚度逐渐增大，当丝网印刷次数为3次时，薄膜厚度为2μ皿。紫外一可见光谱和荧光光谱结果表明：所制备的PbS薄膜在350—1100nm波长范围有大的吸收，而且在488nm处有一宽的荧光发射峰。PbS薄膜是可用作薄膜太阳能电池的潜在光吸收材料。PbS precursor powders were prepared by an organic molten salt method and the PbS precursor powders are dispersed in terpineol to prepare screen printing paste. The PbS paste is deposited on ordinary glass substrate by the screen printing method to form the PbS absorber layer and the printed PbS absorber layers are annealed and characterized by XRD, SEM, ultraviolet-visible （ UV- vis） and photoluminescence （PL） spectra, respectively. XRD results indicated that the prepared sample is only PbS phase. SEM results indicated that the PbS thin films are composed by loose, uniform distribution, nanorod-like PbS nanocrystals with the diameter of about 100 nm and the length of about 2 - 5 μm. Through study on the screen printing process, the results showed that with the increase of the number of screen printing, PbS film thickness increases gradually, when the number of screen printing is 3 times, the film thickness is 2 μm. The UV-vis and PL spectra results indicated that the PbS thin films exhibited a large absorbance property in the wavelength range of 350 - 1 100 nm and the PL spectrum had a broad emission band centered at 488 nm. The nanorod-like PbS thin films might have potential application in solar cells.

关 键 词：PbS薄膜 有机熔盐法 丝网印刷法 光学性能 表征 

分 类 号：TB331[一般工业技术—材料科学与工程]