Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

Hyun Ju Choi; Jun Kyu Yang; Sook Yoon; Hyung Ho Park

doi:10.1016/j.apsusc.2004.10.069

Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

Hyun Ju Choi, Jun Kyu Yang, Sook Yoon, Hyung Ho Park

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

8 Citations (Scopus)

Abstract

We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.

Original language	English
Pages (from-to)	92-95
Number of pages	4
Journal	Applied Surface Science
Volume	244
Issue number	1-4
DOIs	https://doi.org/10.1016/j.apsusc.2004.10.069
Publication status	Published - 2005 May 15
Event	12th International Conference on Solid Films and Surfaces - Hammatsu, Japan Duration: 2004 Jun 21 → 2004 Jun 25

Bibliographical note

Funding Information:
The authors wish to acknowledge the financial support from KISTEP (M1-0214-00-0228). The experiments at PLS were supported in part by MOST and POSTECH.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2004.10.069

Cite this

@article{5f9764bb0e564a6c9128fb98eb7649b6,

title = "Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal",

abstract = "We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.",

author = "Choi, {Hyun Ju} and Yang, {Jun Kyu} and Sook Yoon and Park, {Hyung Ho}",

note = "Funding Information: The authors wish to acknowledge the financial support from KISTEP (M1-0214-00-0228). The experiments at PLS were supported in part by MOST and POSTECH. ; 12th International Conference on Solid Films and Surfaces ; Conference date: 21-06-2004 Through 25-06-2004",

year = "2005",

month = may,

day = "15",

doi = "10.1016/j.apsusc.2004.10.069",

language = "English",

volume = "244",

pages = "92--95",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

AU - Choi, Hyun Ju

AU - Yang, Jun Kyu

AU - Yoon, Sook

AU - Park, Hyung Ho

N1 - Funding Information: The authors wish to acknowledge the financial support from KISTEP (M1-0214-00-0228). The experiments at PLS were supported in part by MOST and POSTECH.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.

AB - We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.

UR - http://www.scopus.com/inward/record.url?scp=15844364626&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15844364626&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2004.10.069

DO - 10.1016/j.apsusc.2004.10.069

M3 - Conference article

AN - SCOPUS:15844364626

SN - 0169-4332

VL - 244

SP - 92

EP - 95

JO - Applied Surface Science

JF - Applied Surface Science

IS - 1-4

T2 - 12th International Conference on Solid Films and Surfaces

Y2 - 21 June 2004 through 25 June 2004

ER -

Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this