氢氧化钾对PbS光学薄膜制备的影响  

Effect of Potassium Hydroxide Concentration on the Quality of PbS Optical Films

作　　者：兰慧琴[1] LAN Huiqin(Fujian Chuanzheng Communications College,Fuzhou 350007,China)

机构地区：[1]福建船政交通职业学院,福建福州350007

出　　处：《重庆科技学院学报（自然科学版）》2022年第6期84-88,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：福建省2021年度“我为建设新福建献良策”(统一战线专项)“福建省职业教育中、高、本衔接人才培养质量保障体系构建研究”(JAT21113);福建省中青年教师教育科研项目“退火对PbS薄膜的结构及光学性质的影响”(JZ180366)。

摘　　要：以三水醋酸铅、硫脲、KOH等为原料,利用化学浴沉积法制备PbS光学薄膜。通过原子力显微镜、X射线衍射仪及扫描电镜仪等仪器,测试KOH的浓度及其水解时间对PbS光学薄膜的影响。实验结果表明:KOH水解时间越长,PbS光学薄膜水解层越厚,PbS基体越薄;PbS的断裂伸长率、拉伸断裂应力及拉伸强度随着KOH水解反应时间的增加而降低。当KOH的浓度为2 mol L时,生成晶体的规格最大、晶体结晶性能最优;当KOH的浓度为4 mol L时,PbS光学薄膜成膜速率最快。Lead acetate trihydrate,thiourea and potassium hydroxide(KOH)are used as raw materials to prepare PbS optical films by chemical bath deposition.The effects of KOH concentration and hydrolysis reaction time on PbS optical films are tested by atomic force microscope,X-ray diffractometer and scanning electron microscope.The experimental results show that the longer the KOH hydrolysis reaction time is,the thicker the hydrolysis layers of the PbS optical film and the thinner the PbS matrix.The elongation at break,tensile stress at break and tensile strength of PbS decrease with the increase of KOH hydrolysis reaction time.When the molar mass of KOH is 2 mol L,the crystal size is the largest and the crystallization performance of the crystal is the best.And PbS optical film has the best thickness and the strongest corrosion resistance.When the molar mass of KOH is 4mol L,the film formation rate of PbS optical film is the fastest.

关 键 词：化学浴沉积法 水解时间 PbS晶体 Pbs薄膜 耐腐蚀性 成膜速率 

分 类 号：TN205[电子电信—物理电子学]