Temperature dependent photoluminescence from lead sulfide nanosheets and nanocubes

被引：6

作者：

Kim, Jungdong ^{[1
]}

Kim, Seung Gi ^{[1
]}

Oh, Eunsoon ^{[1
]}

Kim, Sang Hyuk ^{[2
]}

Choi, Won Jun ^{[2
]}

机构：

[1] Chungnam Natl Univ, Dept Phys, Daejeon, South Korea

[2] Korea Inst Sci & Technol, Ctr Optoelect Convergence Syst, Seoul, South Korea

来源：

NANOTECHNOLOGY | 2016年 / 27卷 / 04期

关键词：

lead sulfide; photoluminescence; nanosheets; PBS; GROWTH;

D O I：

10.1088/0957-4484/27/4/045707

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We studied temperature dependent photoluminescence (PL) spectra in the mid-infrared range from lead sulfide (PbS) nanosheets with an average thickness of 25 nm and nanocubes grown by solvothermal and hydrothermal methods. Distinct bandedge PL emission was observed in the whole temperature range between 10 and 300 K, indicating the high optical quality of these nanostructures. The PL peak of the nanosheets was found at 0.326 eV at 10 K, about 40 meV higher than that of bulk PbS due to the quantum confinement effect, whereas no confinement effect was observed for the nanocubes. We also demonstrate that the absorption edges of the nanocubes and nanosheets in the transmission spectra agree very well with their fundamental bandgap.

引用

页数：6

共 15 条

[1] Synthesis of single-crystal PbS nanorods via a simple hydrothermal process using PEO-PPO-PEO triblock copolymer as a structure-directing agent
Bu, Junfu
Nie, Chageng
Liang, Jinxia
Sun, Lan
Xie, Zhaoxiong
Wu, Qi
Lin, Changjian
[J]. NANOTECHNOLOGY, 2011, 22 (12)
[2] Growth and photoluminescence properties of PbS nanocubes
Cao, Huaqiang
Wang, Guozhi
Zhang, Sichun
Zhang, Xinrong
[J]. NANOTECHNOLOGY, 2006, 17 (13) : 3280 - 3287
[3] A REVIEW OF SEMICONDUCTOR PROPERTIES OF PBTE, PBSE, PBS AND PBO
DALVEN, R
[J]. INFRARED PHYSICS, 1969, 9 (04): : 141 - +
[4] Ethylenediamine inducing growth of {100} facets exposed PbS nanosheets
Fang, Zhen
Wang, Qin
Wang, Xiaoqing
Zhu, Baichuan
Fan, Fan
Wang, Chenyan
Liu, Xiaowang
[J]. CRYSTAL RESEARCH AND TECHNOLOGY, 2012, 47 (06) : 635 - 642
[5] Morphology control and photovoltaic application of solvothermally synthesized PbS nanostructures
Goswami, Syamanta K.
Oh, Eunsoon
[J]. MATERIALS LETTERS, 2014, 117 : 138 - 141
[6] Optical properties and effect of carrier tunnelling in CdSe colloidal quantum dots: A comparative study with different ligands
Goswami, Syamanta Kumar
Kim, Tae Soo
Oh, Eunsoon
Challa, Kiran Kumar
Kim, Eui-Tae
[J]. AIP ADVANCES, 2012, 2 (03):
[7] Size-Dependent Optical Properties of Colloidal PbS Quantum Dots
Moreels, Iwan
Lambert, Karel
Smeets, Dries
De Muynck, David
Nollet, Tom
Martins, Jose C.
Vanhaecke, Frank
Vantomme, Andre
Delerue, Christophe
Allan, Guy
Hens, Zeger
[J]. ACS NANO, 2009, 3 (10) : 3023 - 3030
[8] Optical properties of GaN and GaMnN nanowires grown on sapphire substrates
Oh, Eunsoon
Choi, Jung Ho
Seong, Han-Kyu
Choi, Heon-Jin
[J]. APPLIED PHYSICS LETTERS, 2006, 89 (09)
[9] Size-dependent temperature variation of the energy gap in lead-salt quantum dots
Olkhovets, A
Hsu, RC
Lipovskii, A
Wise, FW
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (16) : 3539 - 3542
[10] Tunability of the optical band edge in thin PbS films chemically deposited on GaAs(100)
Osherov, Anna
Makai, Janos P.
Balazs, Janos
Horvath, Zsolt J.
Gutman, Nadav
Sa'ar, Amir
Golan, Yuval
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (26)

← 1 2 →