Size-independent peak shift between normal and upconversion photoluminescence in MPA-capped CdTe nanoparticles

被引：2

作者：

Ananthakumar, S. ^{[1
]}

Jayabalan, J. ^{[2
]}

Singh, Asha ^{[2
]}

Khan, Salahuddin ^{[2
]}

Prajapati, Subhash ^{[2
]}

Babu, S. Moorthy ^{[1
]}

Chari, Rama ^{[2
]}

机构：

[1] Anna Univ, Ctr Crystal Growth, Madras 600025, Tamil Nadu, India

[2] Raja Ramanna Ctr Adv Technol, Laser Phys Applicat Sect, Indore 452013, India

来源：

PRAMANA-JOURNAL OF PHYSICS | 2014年 / 82卷 / 02期

关键词：

Upconversion photoluminescence; CdTe nanoparticles; femtosecond laser; SEMICONDUCTOR NANOCRYSTALS; CDSE;

D O I：

10.1007/s12043-014-0689-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this article, we report size-dependent measurement of the shift in peak of upconversion photoluminescence spectra compared to that of normal photoluminescence using a 800 nm femtosecond laser and its second harmonic. It has been shown that the upconversion photoluminescence is always red-shifted compared to that of normal PL in all the samples. By measuring the power-dependent upconversion photoluminescence (UCPL), it has been shown that the origin of UCPL from MPA-capped CdTe nanoparticles is mainly of two-photon absorption.

引用

页码：353 / 358

页数：6

共 7 条

[1] Size-independent peak shift between normal and upconversion photoluminescence in MPA-capped CdTe nanoparticles
S ANANTHAKUMAR
J JAYABALAN
ASHA SINGH
SALAHUDDIN KHAN
SUBHASH PRAJAPATI
S MOORTHY BABU
RAMA CHARI
Pramana, 2014, 82 : 353 - 358
[2] Size dependence of upconversion photoluminescence in MPA capped CdTe quantum dots: Existence of upconversion bright point
Ananthakumar, S.
Jayabalan, J.
Singh, Asha
Khan, Salahuddin
Babu, S. Moorthy
Chari, Rama
JOURNAL OF LUMINESCENCE, 2016, 169 : 308 - 312
[3] Systematic investigation of interactions between papain and MPA-capped CdTe quantum dots
Xiao, Qi
Qiu, Hangna
Huang, Shan
Huang, Chusheng
Su, Wei
Hu, Baoqing
Liu, Yi
MOLECULAR BIOLOGY REPORTS, 2013, 40 (10) : 5781 - 5789
[4] Systematic investigation of interactions between papain and MPA-capped CdTe quantum dots
Qi Xiao
Hangna Qiu
Shan Huang
Chusheng Huang
Wei Su
Baoqing Hu
Yi Liu
Molecular Biology Reports, 2013, 40 : 5781 - 5789
[5] Impact of Silver Doping on the Crystalline Size and Intrinsic Strain of MPA-Capped CdTe Nanocrystals: A Study by Williamson–Hall Method and Size–Strain Plot Method
Pijush Ch. Dey
Ratan Das
Journal of Materials Engineering and Performance, 2021, 30 : 652 - 660
[6] Selective determination of sulphide based on photoluminescence quenching of MPA-capped CdTe nanocrystals by exploiting a gas-diffusion multi-pumping flow method
Rodrigues, S. Sofia M.
Oleksiak, Zuzanna
Ribeiro, David S. M.
Pobozy, Ewa
Trojanowicz, Marek
Prior, Joao A. V.
Santos, Joao L. M.
ANALYTICAL METHODS, 2014, 6 (19) : 7956 - 7966
[7] Impact of Silver Doping on the Crystalline Size and Intrinsic Strain of MPA-Capped CdTe Nanocrystals: A Study by Williamson-Hall Method and Size-Strain Plot Method
Dey, Pijush Ch
Das, Ratan
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2021, 30 (01) : 652 - 660

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