Surface modification of a new flexible substrate based on hydroxypropylcellulose for optoelectronic applications

Elvira Maria Correia Fortunato; Maria Helena Figueiredo Godinho; H. Santos; A Marques; V. Assunção; Luis Miguel Nunes Pereira; Hugo Manuel Brito Águas; Isabel Maria Mercês Ferreira; Rodrigo Ferrão de Paiva Martins

doi:10.1016/S0040-6090(03)00959-3

Surface modification of a new flexible substrate based on hydroxypropylcellulose for optoelectronic applications

Elvira Maria Correia Fortunato, Maria Helena Figueiredo Godinho, H. Santos, A Marques, V. Assunção, Luis Miguel Nunes Pereira, Hugo Manuel Brito Águas, Isabel Maria Mercês Ferreira, Rodrigo Ferrão de Paiva Martins

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

In this paper we examined the electrical and optical properties of a new composite device containing layers of a nematic liquid crystal and cellulose derivative. Using the thermally stimulated depolarization Current (TSDC) method we obtained information regarding the conduction mechanism, the activation energy, and the pre-exponential frequency factor in the Arrhenius diagrams. The optical transmission is slightly dependent on the polarization field, and the thermal switch behavior was obtained at the nematic-isotrop transition. When a.c. voltage is applied to the sample, the optical transmission depends strongly on the field amplitude, and a very good contrast is obtained.

Original language	English
Pages (from-to)	127-131
Number of pages	5
Journal	Thin Solid Films
Volume	442
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(03)00959-3
Publication status	Published - 1 Jan 2003

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Fortunato, Elvira Maria Correia ; Godinho, Maria Helena Figueiredo ; Santos, H. ; Marques, A ; Assunção, V. ; Pereira, Luis Miguel Nunes ; Águas, Hugo Manuel Brito ; Ferreira, Isabel Maria Mercês ; Martins, Rodrigo Ferrão de Paiva. / Surface modification of a new flexible substrate based on hydroxypropylcellulose for optoelectronic applications. In: Thin Solid Films. 2003 ; Vol. 442, No. 1-2. pp. 127-131.

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abstract = "In this paper we examined the electrical and optical properties of a new composite device containing layers of a nematic liquid crystal and cellulose derivative. Using the thermally stimulated depolarization Current (TSDC) method we obtained information regarding the conduction mechanism, the activation energy, and the pre-exponential frequency factor in the Arrhenius diagrams. The optical transmission is slightly dependent on the polarization field, and the thermal switch behavior was obtained at the nematic-isotrop transition. When a.c. voltage is applied to the sample, the optical transmission depends strongly on the field amplitude, and a very good contrast is obtained.",

keywords = "surface composition, polymers, sputtering, zinc oxide",

author = "Fortunato, {Elvira Maria Correia} and Godinho, {Maria Helena Figueiredo} and H. Santos and A Marques and V. Assun{\c c}{\~a}o and Pereira, {Luis Miguel Nunes} and {\'A}guas, {Hugo Manuel Brito} and Ferreira, {Isabel Maria Merc{\^e}s} and Martins, {Rodrigo Ferr{\~a}o de Paiva}",

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Surface modification of a new flexible substrate based on hydroxypropylcellulose for optoelectronic applications. / Fortunato, Elvira Maria Correia ; Godinho, Maria Helena Figueiredo; Santos, H.; Marques, A; Assunção, V.; Pereira, Luis Miguel Nunes ; Águas, Hugo Manuel Brito ; Ferreira, Isabel Maria Mercês ; Martins, Rodrigo Ferrão de Paiva.

In: Thin Solid Films, Vol. 442, No. 1-2, 01.01.2003, p. 127-131.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Surface modification of a new flexible substrate based on hydroxypropylcellulose for optoelectronic applications

AU - Fortunato, Elvira Maria Correia

AU - Godinho, Maria Helena Figueiredo

AU - Santos, H.

AU - Marques, A

AU - Assunção, V.

AU - Pereira, Luis Miguel Nunes

AU - Águas, Hugo Manuel Brito

AU - Ferreira, Isabel Maria Mercês

AU - Martins, Rodrigo Ferrão de Paiva

PY - 2003/1/1

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N2 - In this paper we examined the electrical and optical properties of a new composite device containing layers of a nematic liquid crystal and cellulose derivative. Using the thermally stimulated depolarization Current (TSDC) method we obtained information regarding the conduction mechanism, the activation energy, and the pre-exponential frequency factor in the Arrhenius diagrams. The optical transmission is slightly dependent on the polarization field, and the thermal switch behavior was obtained at the nematic-isotrop transition. When a.c. voltage is applied to the sample, the optical transmission depends strongly on the field amplitude, and a very good contrast is obtained.

AB - In this paper we examined the electrical and optical properties of a new composite device containing layers of a nematic liquid crystal and cellulose derivative. Using the thermally stimulated depolarization Current (TSDC) method we obtained information regarding the conduction mechanism, the activation energy, and the pre-exponential frequency factor in the Arrhenius diagrams. The optical transmission is slightly dependent on the polarization field, and the thermal switch behavior was obtained at the nematic-isotrop transition. When a.c. voltage is applied to the sample, the optical transmission depends strongly on the field amplitude, and a very good contrast is obtained.

KW - surface composition

KW - polymers

KW - sputtering

KW - zinc oxide

U2 - 10.1016/S0040-6090(03)00959-3

DO - 10.1016/S0040-6090(03)00959-3

M3 - Article

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SP - 127

EP - 131

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

IS - 1-2

ER -