Optical characterization of the AgInS2 nanocrystals synthesized in aqueous media under stoichiometric conditions

L. Borkovska; A. Romanyuk; V. Strelchuk; Yu Polishchuk; V. Kladko; A. Raevskaya; O. Stroyuk; T. Kryshtab

doi:10.1016/j.mssp.2015.02.041

Optical characterization of the AgInS₂ nanocrystals synthesized in aqueous media under stoichiometric conditions

L. Borkovska, A. Romanyuk, V. Strelchuk, Yu Polishchuk, V. Kladko, A. Raevskaya, O. Stroyuk, T. Kryshtab

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The optical characteristics of AgInS₂ nanocrystals (NCs) synthesized in aqueous solutions in the presence of aliphatic mercaptoacids under stoichiometric conditions (at a [Ag]:[In]:[S] molar ratio of 1:1:2) have been studied with micro-Raman, optical absorption, photoluminescence (PL) and PL excitation spectroscopy. The X-ray diffraction (XRD) proved predominant formation of nanocrystals (NCs) of chalcopyrite AgInS₂ phase of the average diameter about 4 nm. Micro-Raman spectra confirmed formation of coexisting the chalcopyrite AgInS₂ and cubic AgIn₅S₈ phases. The PL of the undoped and Zn-doped NCs embedded in polymer films of gelatin is found to be caused by defects localized in the NCs of two different ensembles each of which generates its own PL band. It is assumed that one of the ensembles is composed of the NCs of chalcopyrite phase and the other contains NCs of secondary phase, presumably of the cubic AgIn₅S₈.

Original language	English
Pages (from-to)	135-142
Number of pages	8
Journal	Materials Science in Semiconductor Processing
Volume	37
DOIs	https://doi.org/10.1016/j.mssp.2015.02.041
State	Published - 3 Jun 2015
Externally published	Yes

Keywords

Aqueous synthesis
Micro-Raman
Nanocrystals
Photoluminescence
Silver indium sulfide

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10.1016/j.mssp.2015.02.041

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title = "Optical characterization of the AgInS2 nanocrystals synthesized in aqueous media under stoichiometric conditions",

abstract = "The optical characteristics of AgInS2 nanocrystals (NCs) synthesized in aqueous solutions in the presence of aliphatic mercaptoacids under stoichiometric conditions (at a [Ag]:[In]:[S] molar ratio of 1:1:2) have been studied with micro-Raman, optical absorption, photoluminescence (PL) and PL excitation spectroscopy. The X-ray diffraction (XRD) proved predominant formation of nanocrystals (NCs) of chalcopyrite AgInS2 phase of the average diameter about 4 nm. Micro-Raman spectra confirmed formation of coexisting the chalcopyrite AgInS2 and cubic AgIn5S8 phases. The PL of the undoped and Zn-doped NCs embedded in polymer films of gelatin is found to be caused by defects localized in the NCs of two different ensembles each of which generates its own PL band. It is assumed that one of the ensembles is composed of the NCs of chalcopyrite phase and the other contains NCs of secondary phase, presumably of the cubic AgIn5S8.",

keywords = "Aqueous synthesis, Micro-Raman, Nanocrystals, Photoluminescence, Silver indium sulfide",

author = "L. Borkovska and A. Romanyuk and V. Strelchuk and Yu Polishchuk and V. Kladko and A. Raevskaya and O. Stroyuk and T. Kryshtab",

year = "2015",

month = jun,

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doi = "10.1016/j.mssp.2015.02.041",

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T1 - Optical characterization of the AgInS2 nanocrystals synthesized in aqueous media under stoichiometric conditions

AU - Borkovska, L.

AU - Romanyuk, A.

AU - Strelchuk, V.

AU - Polishchuk, Yu

AU - Kladko, V.

AU - Raevskaya, A.

AU - Stroyuk, O.

AU - Kryshtab, T.

PY - 2015/6/3

Y1 - 2015/6/3

N2 - The optical characteristics of AgInS2 nanocrystals (NCs) synthesized in aqueous solutions in the presence of aliphatic mercaptoacids under stoichiometric conditions (at a [Ag]:[In]:[S] molar ratio of 1:1:2) have been studied with micro-Raman, optical absorption, photoluminescence (PL) and PL excitation spectroscopy. The X-ray diffraction (XRD) proved predominant formation of nanocrystals (NCs) of chalcopyrite AgInS2 phase of the average diameter about 4 nm. Micro-Raman spectra confirmed formation of coexisting the chalcopyrite AgInS2 and cubic AgIn5S8 phases. The PL of the undoped and Zn-doped NCs embedded in polymer films of gelatin is found to be caused by defects localized in the NCs of two different ensembles each of which generates its own PL band. It is assumed that one of the ensembles is composed of the NCs of chalcopyrite phase and the other contains NCs of secondary phase, presumably of the cubic AgIn5S8.

AB - The optical characteristics of AgInS2 nanocrystals (NCs) synthesized in aqueous solutions in the presence of aliphatic mercaptoacids under stoichiometric conditions (at a [Ag]:[In]:[S] molar ratio of 1:1:2) have been studied with micro-Raman, optical absorption, photoluminescence (PL) and PL excitation spectroscopy. The X-ray diffraction (XRD) proved predominant formation of nanocrystals (NCs) of chalcopyrite AgInS2 phase of the average diameter about 4 nm. Micro-Raman spectra confirmed formation of coexisting the chalcopyrite AgInS2 and cubic AgIn5S8 phases. The PL of the undoped and Zn-doped NCs embedded in polymer films of gelatin is found to be caused by defects localized in the NCs of two different ensembles each of which generates its own PL band. It is assumed that one of the ensembles is composed of the NCs of chalcopyrite phase and the other contains NCs of secondary phase, presumably of the cubic AgIn5S8.

KW - Aqueous synthesis

KW - Micro-Raman

KW - Nanocrystals

KW - Photoluminescence

KW - Silver indium sulfide

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U2 - 10.1016/j.mssp.2015.02.041

DO - 10.1016/j.mssp.2015.02.041

M3 - Artículo

SN - 1369-8001

VL - 37

SP - 135

EP - 142

JO - Materials Science in Semiconductor Processing

JF - Materials Science in Semiconductor Processing

ER -

Optical characterization of the AgInS₂ nanocrystals synthesized in aqueous media under stoichiometric conditions

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Keywords

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