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Synthesis of copper indium disulfide...

University of Idaho.

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Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors./
Author:	Nairn, Justin J.
Description:	189 p.
Notes:	Advisers: Thomas Bitterwolf; Ray von Wandruszka.
Contained By:	Dissertation Abstracts International70-02B.
Subject:	Chemistry, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3347538
ISBN:	9781109025873

Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors.
Nairn, Justin J.

Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors. - 189 p.

Advisers: Thomas Bitterwolf; Ray von Wandruszka.

Thesis (Ph.D.)--University of Idaho, 2008.

Ultrafine CuInS2 chalcopyrite nanoparticles were synthesized via thermal- and photo-decomposition of single source precursors with the general formula [(R3P)2CuIn(SR)4]. By developing a range of single source precursors that decompose at lower temperatures (>160°C) we were able to access smaller (>2.5 nm diameter) nanoparticle sizes using solvo-thermal synthesis. Furthermore, we report the first account of the use of light irradiation to generate ternary semi-conducting nanoparticles. Using light as the decomposition agent gives different nanoparticle growth dynamics which leads to the slow evolution of ultrafine chalcopyrite nanoparticles. Thus this photolysis technique gives unprecedented control over nanoparticle sizes from the molecular level to greater than 3.5 nm in diameter. UV-vis absorption, 1H and 31P{1H} NMR, and mass spectrometry were used to characterize the decomposition of the precursors and nanoparticle formation. The nanoparticles were characterized by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy energy dispersive X-ray spectroscopy, powder and single crystal X-ray diffraction (XRD), electron diffraction, inductively coupled plasma analysis, UV-vis absorption spectroscopy, and photoluminescence spectroscopy. The nanoparticles have a wurzite-type crystal structure and display a hypsochromic shift in their emission band due to quantum confinement effects. This was consistent with the size of the nanocrystals as indicated in the HRTEM and XRD analyses. Theorists have predicted solar cells based on quantum dot semi-conducting photo-absorbing nanomaterials could have extraordinarily high efficiencies of up to &sim;63.2%. A rudimentary homo-junction solar cell constructed employing our ultrafine photolytically generated nanoparticles demonstrated reasonable photo-conversion efficiencies of 0.006%.

ISBN: 9781109025873Subjects--Topical Terms:

1021807
Chemistry, General.

Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors.
LDR:02886nam 2200289 a 45 001 855267
005 20100708
008 100708s2008 ||||||||||||||||| ||eng d
020 $a 9781109025873
035 $a (UMI)AAI3347538
035 $a AAI3347538
040 $a UMI $c UMI
100 1 $a Nairn, Justin J. $3 1021834
245 1 0 $a Synthesis of copper indium disulfide chalcopyrite nanoparticles via thermal- and photo-decomposition of single source precursors.
300 $a 189 p.
500 $a Advisers: Thomas Bitterwolf; Ray von Wandruszka.
500 $a Source: Dissertation Abstracts International, Volume: 70-02, Section: B, page: 1018.
502 $a Thesis (Ph.D.)--University of Idaho, 2008.
520 $a Ultrafine CuInS2 chalcopyrite nanoparticles were synthesized via thermal- and photo-decomposition of single source precursors with the general formula [(R3P)2CuIn(SR)4]. By developing a range of single source precursors that decompose at lower temperatures (>160°C) we were able to access smaller (>2.5 nm diameter) nanoparticle sizes using solvo-thermal synthesis. Furthermore, we report the first account of the use of light irradiation to generate ternary semi-conducting nanoparticles. Using light as the decomposition agent gives different nanoparticle growth dynamics which leads to the slow evolution of ultrafine chalcopyrite nanoparticles. Thus this photolysis technique gives unprecedented control over nanoparticle sizes from the molecular level to greater than 3.5 nm in diameter. UV-vis absorption, 1H and 31P{1H} NMR, and mass spectrometry were used to characterize the decomposition of the precursors and nanoparticle formation. The nanoparticles were characterized by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy energy dispersive X-ray spectroscopy, powder and single crystal X-ray diffraction (XRD), electron diffraction, inductively coupled plasma analysis, UV-vis absorption spectroscopy, and photoluminescence spectroscopy. The nanoparticles have a wurzite-type crystal structure and display a hypsochromic shift in their emission band due to quantum confinement effects. This was consistent with the size of the nanocrystals as indicated in the HRTEM and XRD analyses. Theorists have predicted solar cells based on quantum dot semi-conducting photo-absorbing nanomaterials could have extraordinarily high efficiencies of up to &sim;63.2%. A rudimentary homo-junction solar cell constructed employing our ultrafine photolytically generated nanoparticles demonstrated reasonable photo-conversion efficiencies of 0.006%.
590 $a School code: 0089.
650 4 $a Chemistry, General. $3 1021807
650 4 $a Chemistry, Inorganic. $3 517253
690 $a 0485
690 $a 0488
710 2 $a University of Idaho. $3 718915
773 0 $t Dissertation Abstracts International $g 70-02B.
790 $a 0089
790 1 0 $a Bitterwolf, Thomas, $e advisor
790 1 0 $a von Wandruszka, Ray, $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3347538