Structure and photoinduced volume changes of obliquely deposited amorphous selenium

R. Lukács, J. Hegedüs, S. Kugler

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Atomic scale computer simulations on structures and photoinduced volume changes of flatly and obliquely deposited amorphous selenium (a-Se) films have been carried out in order to understand how the properties of chalcogenide glasses are influenced by their preparation method. Obliquely deposited a-Se thin films contain more coordination defects and larger voids than the flatly deposited ones. To model the photoinduced volume changes the electron excitation and hole creation were treated independently within the framework of tight-binding formalism. Covalent and interchain bond breakings and formations were found. The obliquely deposited samples containing voids showed a wide spectrum of photoinduced structural changes in the microscopic level and volume changes in the macroscopic level.

Original languageEnglish
Article number103512
JournalJournal of Applied Physics
Volume104
Issue number10
DOIs
Publication statusPublished - 2008

Fingerprint

selenium
voids
covalent bonds
computerized simulation
formalism
preparation
glass
defects
thin films
excitation
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Structure and photoinduced volume changes of obliquely deposited amorphous selenium. / Lukács, R.; Hegedüs, J.; Kugler, S.

In: Journal of Applied Physics, Vol. 104, No. 10, 103512, 2008.

Research output: Contribution to journalArticle

@article{92dd074f054043d7b7b7c42ec652737c,
title = "Structure and photoinduced volume changes of obliquely deposited amorphous selenium",
abstract = "Atomic scale computer simulations on structures and photoinduced volume changes of flatly and obliquely deposited amorphous selenium (a-Se) films have been carried out in order to understand how the properties of chalcogenide glasses are influenced by their preparation method. Obliquely deposited a-Se thin films contain more coordination defects and larger voids than the flatly deposited ones. To model the photoinduced volume changes the electron excitation and hole creation were treated independently within the framework of tight-binding formalism. Covalent and interchain bond breakings and formations were found. The obliquely deposited samples containing voids showed a wide spectrum of photoinduced structural changes in the microscopic level and volume changes in the macroscopic level.",
author = "R. Luk{\'a}cs and J. Heged{\"u}s and S. Kugler",
year = "2008",
doi = "10.1063/1.3021464",
language = "English",
volume = "104",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - Structure and photoinduced volume changes of obliquely deposited amorphous selenium

AU - Lukács, R.

AU - Hegedüs, J.

AU - Kugler, S.

PY - 2008

Y1 - 2008

N2 - Atomic scale computer simulations on structures and photoinduced volume changes of flatly and obliquely deposited amorphous selenium (a-Se) films have been carried out in order to understand how the properties of chalcogenide glasses are influenced by their preparation method. Obliquely deposited a-Se thin films contain more coordination defects and larger voids than the flatly deposited ones. To model the photoinduced volume changes the electron excitation and hole creation were treated independently within the framework of tight-binding formalism. Covalent and interchain bond breakings and formations were found. The obliquely deposited samples containing voids showed a wide spectrum of photoinduced structural changes in the microscopic level and volume changes in the macroscopic level.

AB - Atomic scale computer simulations on structures and photoinduced volume changes of flatly and obliquely deposited amorphous selenium (a-Se) films have been carried out in order to understand how the properties of chalcogenide glasses are influenced by their preparation method. Obliquely deposited a-Se thin films contain more coordination defects and larger voids than the flatly deposited ones. To model the photoinduced volume changes the electron excitation and hole creation were treated independently within the framework of tight-binding formalism. Covalent and interchain bond breakings and formations were found. The obliquely deposited samples containing voids showed a wide spectrum of photoinduced structural changes in the microscopic level and volume changes in the macroscopic level.

UR - http://www.scopus.com/inward/record.url?scp=57049095876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57049095876&partnerID=8YFLogxK

U2 - 10.1063/1.3021464

DO - 10.1063/1.3021464

M3 - Article

AN - SCOPUS:57049095876

VL - 104

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

M1 - 103512

ER -