| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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White Emitting ZnS Nanocrystals: Synthesis and Spectrum Characterization |
HUANG Qing-Song, DONG Dong-Qing, XU Jian-Ping, ZHANG Xiao-Song, ZHANG Hong-Min, LI Lan
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| 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 of Communication Devices and Technology of Ministry of Education, Tianjin University of Technology, Tianjin 300384 |
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| Cite this article: |
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HUANG Qing-Song, DONG Dong-Qing, XU Jian-Ping et al 2010 Chin. Phys. Lett. 27 057306 |
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Abstract Spherical organic-bonded ZnS nanocrystals with 4.0± 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.
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| Keywords:
73.63.Bd
73.63.Kv
74.25.Gz
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Received: 03 December 2009
Published: 23 April 2010
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[1] Li Y, Rizzo A, Cingolani R and Gigli G 2007 Microchim. Acta 159 207
[2] Dong I S, Chan H Y, Won T K and Tae W K 2009 Nanotechnology 20 365206
[3] Murray C B, Norris D J and Bawendi M G 2002 J. Am. Chem. Soc. 115 8706
[4] Nizamoglu S, Ozel T, Sari E and Demir H V 2007 Nanotechnology 18 5
[5] Pradhan N and Peng X 2007 J. Am. Chem. Soc. 129 3339
[6] Wang Z B, Zhang J Y, Cui Y P and Ye Y H 2008 Chin. Phys. Lett. 25 4435
[7] Tang L, Zhou B, Zhao J, Lv X, Sun F and Wang Z 2009 Colloid. Surf. A 332 43
[8] Yang X C, Xu C C and Giles N C 2008 J. Appl. Phys. 104 073727
[9] Dong D Q, Li L, Zhang X S, Han X and An H P 2007 Chin. Phys. Lett. 24 2661
[10] Saravanan N, Teh G B, Yap S Y P and Cheong K M 2008 J. Mater. Sci. Mater. 19 1206
[11] Zhang Y G, Lu F, Wang Z Y, Wang H X, Kong M G, Zhu X G and Zhang L D 2007 Cryst. Growth Des. 7 1459
[12] Takamichi K, Nitta A, Tanaka K and Aozasa M 2002 Memoirs of the Faculty of Engineering, Osaka City University 43 1
[13] Liu X, Cai X, Qiao J, Mao J and Jiang N 2003 Thin Solid Films 441 200
[14] Tong W, Shen X, Wagner B K, Tran T K, Ogle B, Park W G, Yang T and Summers C J, Jose S 1995 Proc. SPIE 2408 182
[15] Lu H Y and Chu S Y 2004 J. Cryst. Growth 265 476
[16] Jiang D, Cao L, Su G, Liu W, Qu H, Sun Y and Dong B 2009 Mater. Chem. Phys. 115 795
[17] Thuy N M, Sam D T, Thi T M and Khoi N T 2008 J. Nonlin. Opt. Phys. 17 205
[18] Bol A A and Meijerink A 1998 Phys. Rev. B 58 R015997
[19] Nanda J and Sarma D D 2001 J. Appl. Phys. 90 2504
[20] Lü C, Cheng Y, Liu Y, Liu F and Yang B 2006 Adv. Mater. 18 1188
[21] Wang X, Zhuang J, Peng Q and Li Y 2005 Nature 437 121
[22] LaMer V K and Dinegar R H 1950 J. Am. Chem. Soc. 72 4847
[23] LaMer V K 1952 Ind. Eng. Chem. 44 1270
[24] Winterton J, Myers D, Lippmann J, Pisano A and Doyle F 2008 J. Nanopart. Res. 10 893
[25] Donegá C M, Bol A A and Meijerink A 2002 J. Lumin. 96 87
[26] Murase N, Jagannathan R, Kanematsu Y, Watanabe M, Kurita A, Hirata K, Yazawa T and Kushida T 1999 J. Phys. Chem. B 103 754
[27] Cao L, Zhang J, Ren S and Huang S 2002 Appl. Phys. Lett. 80 4300
[28] Tang H, Xu G, Weng L, Pan L and Wang L 2004 Acta Mater. 52 1489
[29] Lu H Y, Chu S Y and Tan S S 2005 Jpn. J. Appl. Phys. 44 5282
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