高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (2): 252.

• 论文 • 上一篇    下一篇

Nd2O3纳米晶谱带特征和光伏响应的研究

崔毅1, 王德军1, 王宝辉1, 李铁津1, 董相廷2, 洪广言2   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 中国科学院应用化学研究所, 长春
  • 收稿日期:1994-04-21 修回日期:1994-07-10 出版日期:1995-02-24 发布日期:1995-02-24
  • 通讯作者: 王德军
  • 作者简介:崔毅,女,39岁,讲师,现在内蒙古民族师范学院化学系工作
  • 基金资助:

    国家教育委员会优秀年轻教师基金

A Study of the Spectrum Properties and the Photovoltage Response of Nanocrystalline Nd2O3

CUI Yi1, WANG De-Jun1, WANG Bao-Hui1, LI Tie-Jin1, DONG Xiang-Ting2, HONG Guang-Yan2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Institute of Applied Chemistry, Academia Sinica, Changchun
  • Received:1994-04-21 Revised:1994-07-10 Online:1995-02-24 Published:1995-02-24

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摘要： 利用紫外-可见反射光谱对不同粒径的Nd2O3纳米晶进行了光吸收特性研究.对其谱带的认证发现,随着样品粒径的变小,部分f→f跃迁的窄带明显增宽并发生红移;另外,在300550nm区的边带显著增强.指认这个边带为O2p→Nd4f的荷移跃迁.利用表面光电压谱及场调制表面光电压谱对其光伏响应特性、谱带归属及界面电子行为进行了研究,并借助于电荷转移和带间跃迁的概念解释了Nd2O3纳米晶谱图的特征.

关键词: Nd2O3, 纳米晶, 表面光电压, 电场调制

Abstract: The diffuse reflectance spectra of nanocrystalline Nd2O3were measured in the ultraviolet-visible region.It is found that the part of f→f transition bands were widened and red-shift occurred.The absorption tail-band in the region from 300 to 550 nm was assigned to the O2p→Nd4ftransition.The behavior of light-induced charge transfer and photovoltaic properties of nanocrystalline Nd2O3were studied by the surface photovoltage spectroscopy(SPS) and electric field modulating SPStechniques.The SPSresponse shows two peaks at 330 nm(P1) and 380 nm(P2) in the UV-Vis range.The spectral features observed can be explained in terms of charge transfer and interband transition.

Key words: Nd2O3, Nanocrystalline, Surface photovoltage, Field modulation

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