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CdTe量子点的超快过程研究
  • ISSN号：1000-0364
  • 期刊名称：《原子与分子物理学报》
  • 时间：0
  • 分类：O562.4[理学—原子与分子物理;理学—物理]
  • 作者机构：[1]吉林大学原子与分子物理研究所,长春130012, [2]河南大学特种功能材料教育部重点实验室,开封475004
  • 相关基金：国家自然科学基金项目（10534010,10874055）
作者： 石英[1], 申怀彬[2], 栾壮[1], 齐立峰[1], 杨莹[1], 金明星[1], 李林松[2], 丁大军[1]
关键词： 量子点, CDTE, 弛豫, quantum dot, CdTe, relaxation
中文摘要：

使用pump-probe技术研究了CdTe量子点的瞬态吸收光谱，通过双指数拟合，得到两个弛豫过程，将得到快过程归结为表面俘获载流子跟价带底空穴的直接复合，即表面态辐射过程；慢过程被归结为电子被深表面态俘获，然后以发射荧光或无辐射跃迁的形式与空穴进行复合，即深表面俘获态辐射过程．并细致的研究了量子点的尺寸对单纯核的弛豫过程的影响．

英文摘要：

The ultrafast dynamics of quantum dot CdTe is studied using femtosecond time-resolved pump/probe transient absorption spectroscopy. The biexponential decays indicate a fast The biexponential decays indicate a fast surface state emission on a scale of 1-3 picoseconds followed by a slower process on the order of 30-40 picoseconds, which was contributed to deep trapping states emission. The detail investigation of the dependence of the relaxation process on the size of quantum dot has been studied.

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期刊信息
  • 《原子与分子物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:四川省科学技术协会
  • 主办单位:中国物理学会 原子与分子物理专业委员会 四川省物理学会 四川大学
  • 主编：芶清泉
  • 地址：成都市一环路南一段24号
  • 邮编：610065
  • 邮箱：yzyf@chinajournal.net.cn
  • 电话：028-85405516
  • 国际标准刊号：ISSN：1000-0364
  • 国内统一刊号：ISSN：51-1199/O4
  • 邮发代号:62-54
  • 获奖情况:
  • 四川省高等学校优秀期刊,四川省科技期刊优秀期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,日本日本科学技术振兴机构数据库,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:4084