White Emitting ZnS Nanocrystals: Synthesis and Spectrum Characterization
Spherical organic-bonded ZnS nanocrystals with 4.0 4-0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence spectrum of sample ([S^2-]/[Zn^2+] = 1.0) shows a strong white emission with a peak at 490nm and - 170 nm full widths at half maximum. By Gauss fitting, th...
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Published in | Chinese physics letters Vol. 27; no. 5; pp. 237 - 240 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.05.2010
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ISSN | 0256-307X 1741-3540 |
DOI | 10.1088/0256-307X/27/5/057306 |
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Abstract | Spherical organic-bonded ZnS nanocrystals with 4.0 4-0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence spectrum of sample ([S^2-]/[Zn^2+] = 1.0) shows a strong white emission with a peak at 490nm and - 170 nm full widths at half maximum. By Gauss fitting, the white emission is attributed to the overlap of a blue emission and a green-yellow emission, originating from electronic transitions from internal S^2- vacancies level to valence band and to the internal Zn^2+ vacancy level, respectively. After sealingZnS nanocrystals onto InGaN chips, the device shows CIE coordinates of (0.29,0.30), which indicates their potential applications for white light emitting diodes. |
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AbstractList | Spherical organic-bonded ZnS nanocrystals with 4.0 4-0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence spectrum of sample ([S^2-]/[Zn^2+] = 1.0) shows a strong white emission with a peak at 490nm and - 170 nm full widths at half maximum. By Gauss fitting, the white emission is attributed to the overlap of a blue emission and a green-yellow emission, originating from electronic transitions from internal S^2- vacancies level to valence band and to the internal Zn^2+ vacancy level, respectively. After sealingZnS nanocrystals onto InGaN chips, the device shows CIE coordinates of (0.29,0.30), which indicates their potential applications for white light emitting diodes. Spherical organic-bonded ZnS nanocrystals with 4.0 plus or minus 0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence spectrum of sample ([S2-]/[Zn2+] = 1.0) shows a strong white emission with a peak at 490 nm and ~ 170 nm full widths at half maximum. By Gauss fitting, the white emission is attributed to the overlap of a blue emission and a green-yellow emission, originating from electronic transitions from internal S2- vacancies level to valence band and to the internal Zn2+ vacancy level, respectively. After sealingZnS nanocrystals onto InGaN chips, the device shows CIE coordinates of (0.29,0.30), which indicates their potential applications for white light emitting diodes. |
Author | 黄青松 董冬青 徐建萍 张晓松 张宏敏 李岚 |
AuthorAffiliation | Institute of Material Physics, Tianjin Key Laboratory for Optoelectronic Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education; and Engineering Research Center ofCommunication Devices and Technology of Ministry of Education, Tianjin University of Technology, Tianjin 300384 |
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CitedBy_id | crossref_primary_10_1088_1674_1056_22_8_087804 crossref_primary_10_1016_j_matchemphys_2016_09_049 crossref_primary_10_1007_s10854_019_02176_1 crossref_primary_10_1016_j_jssc_2014_02_009 crossref_primary_10_1117_1_OE_58_2_025107 |
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Snippet | Spherical organic-bonded ZnS nanocrystals with 4.0 4-0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence spectrum of... Spherical organic-bonded ZnS nanocrystals with 4.0 plus or minus 0.2 nm in diameter are synthesized by a liquid-solid-solution method. The photoluminescence... |
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SubjectTerms | Diodes Emission Emittance Indium gallium nitrides InGaN Nanocrystals Vacancies White light Zinc sulfides ZnS 光致发光光谱 光谱表征 发光二极管灯 晶体合成 白色发光 纳米晶 |
Title | White Emitting ZnS Nanocrystals: Synthesis and Spectrum Characterization |
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