Studies on NiO-PVA composite films for opto-electronics and optical limiters

B. Karthikeyan; S. Hariharan; R. V. Mangalaraja; T. Pandiyarajan; R. Udayabhaskar; P. Sreekanth

doi:10.1109/LPT.2018.2859042

Studies on NiO-PVA composite films for opto-electronics and optical limiters

B. Karthikeyan, S. Hariharan, R. V. Mangalaraja, T. Pandiyarajan, R. Udayabhaskar, P. Sreekanth

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

We report optical, excited-state lifetime, and nonlinear optical (NLO) properties of nickel oxide (NiO)/poly vinylalcohol (PVA) polymer free-standing films for opto-electronics and optical limiting applications. Optical absorption studies of NiO-loaded PVA films show that the exciton peaks are centered at 330 nm. Fluorescence studies reveal that the emission is due to exciton recombination and defects in NiO. Time-resolved fluorescence studies show that the recombination in PVA happens through NiO, where NiO has a faster decay time than the pure PVA. NLO measurements carried out using a 532 nm, 10-ns Nd: YAG laser, show that for a given energy, NiO/PVA shows good optical limiting, and the obtained NLO behavior is due to effective two-photon absorption.

Original language	English
Article number	8418385
Pages (from-to)	1539-1542
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	30
Issue number	17
DOIs	https://doi.org/10.1109/LPT.2018.2859042
State	Published - 1 Sep 2018
Externally published	Yes

Keywords

Optical power limiting
effective two photon absorption
excitons in NiO
polymer nanocomposite

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10.1109/LPT.2018.2859042

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title = "Studies on NiO-PVA composite films for opto-electronics and optical limiters",

abstract = "We report optical, excited-state lifetime, and nonlinear optical (NLO) properties of nickel oxide (NiO)/poly vinylalcohol (PVA) polymer free-standing films for opto-electronics and optical limiting applications. Optical absorption studies of NiO-loaded PVA films show that the exciton peaks are centered at 330 nm. Fluorescence studies reveal that the emission is due to exciton recombination and defects in NiO. Time-resolved fluorescence studies show that the recombination in PVA happens through NiO, where NiO has a faster decay time than the pure PVA. NLO measurements carried out using a 532 nm, 10-ns Nd: YAG laser, show that for a given energy, NiO/PVA shows good optical limiting, and the obtained NLO behavior is due to effective two-photon absorption.",

keywords = "Optical power limiting, effective two photon absorption, excitons in NiO, polymer nanocomposite",

author = "B. Karthikeyan and S. Hariharan and Mangalaraja, {R. V.} and T. Pandiyarajan and R. Udayabhaskar and P. Sreekanth",

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AU - Karthikeyan, B.

AU - Hariharan, S.

AU - Mangalaraja, R. V.

AU - Pandiyarajan, T.

AU - Udayabhaskar, R.

AU - Sreekanth, P.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - We report optical, excited-state lifetime, and nonlinear optical (NLO) properties of nickel oxide (NiO)/poly vinylalcohol (PVA) polymer free-standing films for opto-electronics and optical limiting applications. Optical absorption studies of NiO-loaded PVA films show that the exciton peaks are centered at 330 nm. Fluorescence studies reveal that the emission is due to exciton recombination and defects in NiO. Time-resolved fluorescence studies show that the recombination in PVA happens through NiO, where NiO has a faster decay time than the pure PVA. NLO measurements carried out using a 532 nm, 10-ns Nd: YAG laser, show that for a given energy, NiO/PVA shows good optical limiting, and the obtained NLO behavior is due to effective two-photon absorption.

AB - We report optical, excited-state lifetime, and nonlinear optical (NLO) properties of nickel oxide (NiO)/poly vinylalcohol (PVA) polymer free-standing films for opto-electronics and optical limiting applications. Optical absorption studies of NiO-loaded PVA films show that the exciton peaks are centered at 330 nm. Fluorescence studies reveal that the emission is due to exciton recombination and defects in NiO. Time-resolved fluorescence studies show that the recombination in PVA happens through NiO, where NiO has a faster decay time than the pure PVA. NLO measurements carried out using a 532 nm, 10-ns Nd: YAG laser, show that for a given energy, NiO/PVA shows good optical limiting, and the obtained NLO behavior is due to effective two-photon absorption.

KW - Optical power limiting

KW - effective two photon absorption

KW - excitons in NiO

KW - polymer nanocomposite

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Studies on NiO-PVA composite films for opto-electronics and optical limiters

Abstract

Keywords

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