n(Sm3+)/n(S2O2-3)对液相自组装法制备Sm2S3薄膜的影响

人工晶体学报, 2011, 40(4): 926-931.

n(Sm3+)/n(S2O2-3)对液相自组装法制备Sm2S3薄膜的影响

侯艳超 ^1, , 黄剑锋 ^2, , 周璇 ^3, , 曹丽云 ^4, , 吴建鹏 ^5,

1.陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

2.陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

3.西北工业大学凝固技术国家重点实验室,西安710072

4.陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

5.陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

关键词： Sm2S3薄膜 , 液相自组装 , n(Sm3+)/n(S2O2-3)

Influence of n ( Sm3 + )/n ( S2O2-3 ) on the Sm2 S3 Thin Films Prepared by Liquid Phase Self-assembly Method

采用液相自组装法,以氯化钐( SmCl3·6H2O)和硫代硫酸钠(Na2S2O3·5H2O)为原料,在不同n(Sm3 )/n(S2O2-3)(物质的量比)条件下,于硅基板上制备了α-Sm2S3光学薄膜.利用X射线衍射仪(XRD)、光电子能谱分析(XPS)、原子力显微镜(AFM)和紫外-可见吸收光谱仪(UV-Vis)对SmS3薄膜的物相组成、表面形貌和光学性能进行了表征.结果表明:所制备的Sm2S3薄膜为α-Sm2S3,在一定范围内,随着n(Sm3+)/n(S2O2-3)的增加,α-Sm2S3薄膜的结晶性先增强后降低,并表现出(105)晶面取向生长的特征.紫外透射光谱分析表明,当n(Sm3+)/n(S2O2-3)=1∶2时,Sm2S3薄膜在可见光范围内透过率高达85％,禁带宽度为4.12 eV.

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