Efficient Synthesis of Highly Luminescent Copper Indium Sulfide-Based Core/Shell Nanocrystals with Surprisingly Long-Lived Emission

被引：689

作者：

Li, Liang ^{[1
]}

Pandey, Anshu ^{[1
]}

Werder, Donald J. ^{[1
]}

Khanal, Bishnu P. ^{[1
]}

Pietryga, Jeffrey M. ^{[1
]}

Klimov, Victor I. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Chem, Ctr Adv Solar Photophys, C PCS, Los Alamos, NM 87545 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 05期

关键词：

SINGLE-SOURCE PRECURSORS; CUINS2; NANOCRYSTALS; QUANTUM DOTS; SEMICONDUCTOR NANOCRYSTALS; SOLAR-CELLS; NANOPARTICLES; DYNAMICS; INKS; FILMS;

D O I：

10.1021/ja108261h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report an efficient synthesis of copper indium sulfide nanocrystals with strong photoluminescence in the visible to near-infrared. This method can produce gram quantities of material with a chemical yield in excess of 90% with minimal solvent waste. The overgrowth of as-prepared nanocrystals with a few monolayers of CdS or ZnS increases the photoluminescence quantum efficiency to > 80%. On the basis of time-resolved spectroscopic studies of core/shell particles, we conclude that the emission is due to an optical transition that couples a quantized electron state to a localized hole state, which is most likely associated with an internal defect.

引用

页码：1176 / 1179

页数：4

共 27 条

[1] Ternary I-III-VI quantum dots luminescent in the red to near-infrared [J].

Allen, Peter M. ;

Bawendi, Moungi G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (29) :9240-+

[2]

Alonso M. I., 2001, PHYS REV B, P63

[3] Phase-Selective Synthesis of CuInS2 Nanocrystals [J].

Batabyal, Sudip K. ;

Tian, Lu ;

Venkatram, N. ;

Ji, Wei ;

Vittal, Jagadese J. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (33) :15037-15042

[4] Synthesis and characterization of colloidal CuInS2 nanoparticles from a molecular single-source precursor [J].

Castro, SL ;

Bailey, SG ;

Raffaelle, RP ;

Banger, KK ;

Hepp, AF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (33) :12429-12435

[5] Nanocrystalline chalcopyrite materials (CuInS2 and CuInSe2) via low-temperature pyrolysis of molecular single-source precursors [J].

Castro, SL ;

Bailey, SG ;

Raffaelle, RP ;

Banger, KK ;

Hepp, AF .

CHEMISTRY OF MATERIALS, 2003, 15 (16) :3142-3147

[6] Multiple temperature regimes of radiative decay in CdSe nanocrystal quantum dots: Intrinsic limits to the dark-exciton lifetime [J].

Crooker, SA ;

Barrick, T ;

Hollingsworth, JA ;

Klimov, VI .

APPLIED PHYSICS LETTERS, 2003, 82 (17) :2793-2795

[7] Development of CuInSe2 nanocrystal and nanoring inks for low-cost solar cells [J].

Guo, Qiiie ;

Kim, Suk Jun ;

Kar, Mahaprasad ;

Shafarman, William N. ;

Birkmire, Robert W. ;

Stach, Eric A. ;

Agrawal, Rakesh ;

Hillhouse, Hugh W. .

NANO LETTERS, 2008, 8 (09) :2982-2987

[8] Sulfide Nanocrystal Inks for Dense Cu(In1-xGax)(S1-ySey)2 Absorber Films and Their Photovoltaic Performance [J].

Guo, Qijie ;

Ford, Grayson M. ;

Hillhouse, Hugh W. ;

Agrawal, Rakesh .

NANO LETTERS, 2009, 9 (08) :3060-3065

[9] Nanoparticles of ternary semiconductors in colloids - Low-temperature formation and quantum size effects [J].

Gurin, VS .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1998, 142 (01) :35-40

[10] SUPPRESSION OF CU DIFFUSION FROM A BULK ZNSE SUBSTRATE TO A HOMOEPITAXIAL LAYER BY SE-BEAM IRRADIATION AS A PREGROWTH TREATMENT [J].

HISHIDA, YJ ;

TODA, T ;

YOSHIE, T ;

YAGI, K ;

YAMAGUCHI, T ;

NIINA, T .

APPLIED PHYSICS LETTERS, 1994, 64 (25) :3419-3421

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