Time-resolved photoconductivity of PbSe nanocrystal arrays

被引：101

作者：

Murphy, James E.

Beard, Matthew C. ^{[1
]}

Nozik, Arthur J.

机构：

[1] Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO 80401 USA

[2] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 50期

关键词：

RELAXATION DYNAMICS; QUANTUM DOTS; ELECTRON; SOLIDS; WELLS; GAAS;

D O I：

10.1021/jp0646123

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 the sub-picosecond photoconductivity dynamics of chemically treated PbSe nanocrystal arrays utilizing time-resolved terahertz spectroscopy (TRTS). TRTS allows both the degree of interdot electronic coupling and the carrier dynamics to be extracted simultaneously. The following capping ligands bonded to the quantum dot surface were studied: hydrazine, ethylenediamine, butlyamine, and aniline. In addition, the arrays were treated with NaOH. We find that the treatments affect both the degree of electronic coupling and the carrier dynamics.

引用

收藏

页码：25455 / 25461

页数：7

相关论文

共 36 条

[1] Stochastic models of carrier dynamics in single-walled carbon nanotubes [J].

Barzykin, AV ;

Tachiya, M .

PHYSICAL REVIEW B, 2005, 72 (07)

[2] Electronic coupling in InP nanoparticle arrays [J].

Beard, MC ;

Turner, GM ;

Murphy, JE ;

Micic, OI ;

Hanna, MC ;

Nozik, AJ ;

Schmuttenmaer, CA .

NANO LETTERS, 2003, 3 (12) :1695-1699

[3] Subpicosecond carrier dynamics in low-temperature grown GaAs as measured by time-resolved terahertz spectroscopy [J].

Beard, MC ;

Turner, GM ;

Schmuttenmaer, CA .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (12) :5915-5923

[4] Terahertz spectroscopy [J].

Beard, MC ;

Turner, GM ;

Schmuttenmaer, CA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (29) :7146-7159

[5] Transient photoconductivity in GaAs as measured by time-resolved terahertz spectroscopy [J].

Beard, MC ;

Turner, GM ;

Schmuttenmaer, CA .

PHYSICAL REVIEW B, 2000, 62 (23) :15764-15777

[6] Electric fields on oxidized silicon surfaces: Static polarization of PbSe nanocrystals [J].

Ben-Porat, CH ;

Cherniavskaya, O ;

Brus, L ;

Cho, KS ;

Murray, CB .

JOURNAL OF PHYSICAL CHEMISTRY A, 2004, 108 (39) :7814-7819

[7] Electron and hole transfer from indium phosphide quantum dots [J].

Blackburn, JL ;

Selmarten, DC ;

Ellingson, RJ ;

Jones, M ;

Micic, O ;

Nozik, AJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (07) :2625-2631

[8] Transient terahertz conductivity in photoexcited silicon nanocrystal films [J].

Cooke, D. G. ;

MacDonald, A. N. ;

Hryciw, A. ;

Wang, J. ;

Li, Q. ;

Meldrum, A. ;

Hegmann, F. A. .

PHYSICAL REVIEW B, 2006, 73 (19)

[9] Type II broken band heterostructure quantum dot to obtain a material for the intermediate band solar cell [J].

Cuadra, L ;

Martí, A ;

Luque, A .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2002, 14 (1-2) :162-165

[10] Transport properties of annealed CdSe colloidal nanocrystal solids [J].

Drndic, M ;

Jarosz, MV ;

Morgan, NY ;

Kastner, MA ;

Bawendi, MG .

JOURNAL OF APPLIED PHYSICS, 2002, 92 (12) :7498-7503

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