Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films

Rakesh Ranjan Kumar, A. R. Barik, Vinod Madhavan, Mukund Bapna, K. S. Sangunni, K. V. Adarsh

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

In this Letter, we present the interesting results of photodarkening (PD), transition toward photostability, and a slow crossover from PD to photobleaching when composition of the chalcogenide glassy thin film changes from Ge-deficient to rich. A subsequent Raman analysis on these as-prepared and irradiated samples provide the direct evidence of photoinduced structural rearrangement, i.e., photocrystallization of Se and the removal of edge-sharing GeSe 4 tetrahedra. Further, our experimental results clearly demonstrate that light-induced effects can be effectively controlled by choosing the right composition and provide valuable information on synthesizing photostable/ sensitive glasses.

Original languageEnglish
Pages (from-to)1682-1684
Number of pages3
JournalOptics Letters
Volume38
Issue number10
DOIs
Publication statusPublished - 15 May 2013
Externally publishedYes

Fingerprint

Photobleaching
Glass
crossovers
Light
thin films
tetrahedrons
glass

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Kumar, R. R., Barik, A. R., Madhavan, V., Bapna, M., Sangunni, K. S., & Adarsh, K. V. (2013). Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films. Optics Letters, 38(10), 1682-1684. https://doi.org/10.1364/OL.38.001682

Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films. / Kumar, Rakesh Ranjan; Barik, A. R.; Madhavan, Vinod; Bapna, Mukund; Sangunni, K. S.; Adarsh, K. V.

In: Optics Letters, Vol. 38, No. 10, 15.05.2013, p. 1682-1684.

Research output: Contribution to journalArticle

Kumar, RR, Barik, AR, Madhavan, V, Bapna, M, Sangunni, KS & Adarsh, KV 2013, 'Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films', Optics Letters, vol. 38, no. 10, pp. 1682-1684. https://doi.org/10.1364/OL.38.001682
Kumar, Rakesh Ranjan ; Barik, A. R. ; Madhavan, Vinod ; Bapna, Mukund ; Sangunni, K. S. ; Adarsh, K. V. / Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films. In: Optics Letters. 2013 ; Vol. 38, No. 10. pp. 1682-1684.
@article{3963f9c3569a4f2a9be62d2f94b9da4e,
title = "Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films",
abstract = "In this Letter, we present the interesting results of photodarkening (PD), transition toward photostability, and a slow crossover from PD to photobleaching when composition of the chalcogenide glassy thin film changes from Ge-deficient to rich. A subsequent Raman analysis on these as-prepared and irradiated samples provide the direct evidence of photoinduced structural rearrangement, i.e., photocrystallization of Se and the removal of edge-sharing GeSe 4 tetrahedra. Further, our experimental results clearly demonstrate that light-induced effects can be effectively controlled by choosing the right composition and provide valuable information on synthesizing photostable/ sensitive glasses.",
author = "Kumar, {Rakesh Ranjan} and Barik, {A. R.} and Vinod Madhavan and Mukund Bapna and Sangunni, {K. S.} and Adarsh, {K. V.}",
year = "2013",
month = "5",
day = "15",
doi = "10.1364/OL.38.001682",
language = "English",
volume = "38",
pages = "1682--1684",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "The Optical Society",
number = "10",

}

TY - JOUR

T1 - Crossover from photodarkening to photobleaching in a-GexSe 100-x thin films

AU - Kumar, Rakesh Ranjan

AU - Barik, A. R.

AU - Madhavan, Vinod

AU - Bapna, Mukund

AU - Sangunni, K. S.

AU - Adarsh, K. V.

PY - 2013/5/15

Y1 - 2013/5/15

N2 - In this Letter, we present the interesting results of photodarkening (PD), transition toward photostability, and a slow crossover from PD to photobleaching when composition of the chalcogenide glassy thin film changes from Ge-deficient to rich. A subsequent Raman analysis on these as-prepared and irradiated samples provide the direct evidence of photoinduced structural rearrangement, i.e., photocrystallization of Se and the removal of edge-sharing GeSe 4 tetrahedra. Further, our experimental results clearly demonstrate that light-induced effects can be effectively controlled by choosing the right composition and provide valuable information on synthesizing photostable/ sensitive glasses.

AB - In this Letter, we present the interesting results of photodarkening (PD), transition toward photostability, and a slow crossover from PD to photobleaching when composition of the chalcogenide glassy thin film changes from Ge-deficient to rich. A subsequent Raman analysis on these as-prepared and irradiated samples provide the direct evidence of photoinduced structural rearrangement, i.e., photocrystallization of Se and the removal of edge-sharing GeSe 4 tetrahedra. Further, our experimental results clearly demonstrate that light-induced effects can be effectively controlled by choosing the right composition and provide valuable information on synthesizing photostable/ sensitive glasses.

UR - http://www.scopus.com/inward/record.url?scp=84878633630&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878633630&partnerID=8YFLogxK

U2 - 10.1364/OL.38.001682

DO - 10.1364/OL.38.001682

M3 - Article

C2 - 23938910

AN - SCOPUS:84878633630

VL - 38

SP - 1682

EP - 1684

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 10

ER -