Study of the radiative recombination processes in tetrapod-shaped CdTe nanocrystals

被引：0
|
作者：
Morello, G. [1 ]
Tari, D. [1 ]
Carbone, L. [1 ]
Manna, L. [1 ]
Cingolani, R. [1 ]
De Giorgi, M. [1 ]
机构：
[1] Univ Salento, NNL, CNR, INFM,Distretto Tecnol ISUFI, I-73100 Lecce, Italy
来源：
PHYSICS OF SEMICONDUCTORS | 2009年 / 1199卷
关键词：
Nanocrystals; time-resolved photoluminescence;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work we report the time dependence emission properties of photoexcited carriers in CdTe tetrapod nanocrystals, by using time-resolved photoluminescence spectroscopy. The emission dynamics of the ground and excited state of a tetrapod-structure have pointed out different temporal behaviours ascribed to different carrier relaxation mechanisms. By monitoring the transient emission spectra at different delay times, a remarkable change in the energy position of the lower energy state has been observed, attributable to a photoinduced screening of an internal electric field, originating, in turn, from the ground state charge separation.
引用
收藏
页码：307 / 308
页数：2
相关论文
共 28 条
  • [21] Interaction of CdTe nanocrystals with thiol-containing amino acids at different pH: a fluorimetric study
    Xia, Yun-Sheng
    Zhu, Chang-Qing
    MICROCHIMICA ACTA, 2009, 164 (1-2) : 29 - 34
  • [22] Interaction of CdTe nanocrystals with thiol-containing amino acids at different pH: a fluorimetric study
    Yun-Sheng Xia
    Chang-Qing Zhu
    Microchimica Acta, 2009, 164 : 29 - 34
  • [23] Electron transition and electron-hole recombination processes in epitaxial BaTiO3 films with embedded Co nanocrystals
    Shi, Deli
    Xiong, Zhengwei
    Li, Jun
    Luo, Bin Qiang
    Fang, Lei Ming
    Xia, Yuan Hua
    Gao, Zhipeng
    MATERIALS RESEARCH EXPRESS, 2019, 6 (10)
  • [24] Type-I and type-II nanoscale heterostructures based on CdTe nanocrystals: A comparative study
    Dorfs, Dirk
    Franzl, Thomas
    Osovsky, Ruth
    Brumer, Maya
    Lifshitz, Eftat
    Klar, Thomas A.
    Eychmueller, Alexander
    SMALL, 2008, 4 (08) : 1148 - 1152
  • [25] Rod shaped nanocrystals exhibit superior in vitro dissolution and in vivo bioavailability over spherical like nanocrystals: A case study of lovastatin
    Guo, Mengran
    Fu, Qiang
    Wu, Chunnuan
    Guo, Zhibin
    Li, Mo
    Sun, Jin
    He, Zhonggui
    Yang, Li
    COLLOIDS AND SURFACES B-BIOINTERFACES, 2015, 128 : 410 - 418
  • [26] Non-radiative sub-micro second recombination of excited Er3+ ions in SiO2 sensitized with Si nanocrystals
    Izeddin, I.
    Gregorkiewicz, T.
    Fujii, M.
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2007, 38 (1-2): : 144 - 147
  • [27] Study of Shell Growth Processes of Copper Iron Selenide-based Near-infrared Emitting Nanocrystals
    Sugathan, Anumol
    Tomar, Nitin
    Rajasekar, Guru Pratheep
    Anshu, Ashwini
    Pandey, Anshu
    CHEMNANOMAT, 2023, 9 (05)
  • [28] The Role of the Built-In Electric Field in Recombination Processes of GaN/AlGaN Quantum Wells: Temperature- and Pressure-Dependent Study of Polar and Non-Polar Structures
    Koronski, Kamil
    Korona, Krzysztof P.
    Kryvyi, Serhii
    Wierzbicka, Aleksandra
    Sobczak, Kamil
    Krukowski, Stanislaw
    Strak, Pawel
    Monroy, Eva
    Kaminska, Agata
    MATERIALS, 2022, 15 (08)
123