Pinned emission from ultrasmall cadmium selenide nanocrystals

被引：40

作者：

Dukes, Albert D., III ^{[1
]}

Schreuder, Michael A. ^{[1
]}

Sammons, Jessica A. ^{[1
]}

McBride, James R. ^{[1
]}

Smith, Nathanael J. ^{[1
]}

Rosenthal, Sandra J. ^{[1
,2
,3
]}

机构：

[1] Vanderbilt Univ, Dept Chem, Nashville, TN 37235 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37240 USA

[3] Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37235 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 129卷 / 12期

关键词：

D O I：

10.1063/1.2983632

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report pinning of the emission spectrum in ultrasmall CdSe nanocrystals with a diameter of 1.7 nm and smaller. It was observed that the first emission feature ceased to blueshift once the band edge absorption reached 420 nm, though the band edge absorption continued to blueshift with decreasing nanocrystal diameter. (C) 2008 American Institute of Physics.

引用

页数：4

共 24 条

[1] ELECTRONIC-STRUCTURE AND PHOTOEXCITED-CARRIER DYNAMICS IN NANOMETER-SIZE CDSE CLUSTERS [J].

BAWENDI, MG ;

WILSON, WL ;

ROTHBERG, L ;

CARROLL, PJ ;

JEDJU, TM ;

STEIGERWALD, ML ;

BRUS, LE .

PHYSICAL REVIEW LETTERS, 1990, 65 (13) :1623-1626

[2] White-light emission from magic-sized cadmium selenide nanocrystals [J].

Bowers, MJ ;

McBride, JR ;

Rosenthal, SJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (44) :15378-15379

[3] The effects of chemisorption on the luminescence of CdSe quantum dots [J].

Bullen, C ;

Mulvaney, P .

LANGMUIR, 2006, 22 (07) :3007-3013

[4] Investigation of the crystallization process in 2 nm CdSe quantum dots [J].

Chen, XB ;

Samia, ACS ;

Lou, YB ;

Burda, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (12) :4372-4375

[5] Band-edge exciton in quantum dots of semiconductors with a degenerate valence band: Dark and bright exciton states [J].

Efros, AL ;

Rosen, M ;

Kuno, M ;

Nirmal, M ;

Norris, DJ ;

Bawendi, M .

PHYSICAL REVIEW B, 1996, 54 (07) :4843-4856

[6] Small is different: Shape-, size-, and composition-dependent properties of some colloidal semiconductor nanocrystals [J].

El-Sayed, MA .

ACCOUNTS OF CHEMICAL RESEARCH, 2004, 37 (05) :326-333

[7] Structure-property correlation of CdSe clusters using experimental results and first-principles DFT calculations [J].

Jose, R ;

Zhanpeisov, NU ;

Fukumura, H ;

Baba, Y ;

Ishikawa, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (02) :629-636

[8] White-light-emitting CdSe quantum dots synthesized at room temperature [J].

Jose, Rajan ;

Zhelev, Zhivko ;

Bakalova, Rumiana ;

Baba, Yoshinobu ;

Ishikawa, Mitsuru .

APPLIED PHYSICS LETTERS, 2006, 89 (01)

[9] Identification of acidic phosphorus-containing ligands involved in the surface chemistry of CdSe nanoparticles prepared in tri-n-octylphosphine oxide solvents [J].

Kopping, Jordan T. ;

Patten, Timothy E. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (17) :5689-5698

[10] The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state [J].

Kuno, M ;

Lee, JK ;

Dabbousi, BO ;

Mikulec, FV ;

Bawendi, MG .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (23) :9869-9882

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