In:
Physical Chemistry Chemical Physics, Royal Society of Chemistry (RSC), Vol. 25, No. 35 ( 2023), p. 23770-23782
Abstract:
As a type of smart dimming film, polymer-dispersed liquid crystals (PDLCs) show great prospects in the fields of indoor partition, electronic curtains, and automobile windows. However, its high off-axis haze greatly impacts the application scope. This obvious shortcoming is mainly caused by the serious mismatch between the effective refractive index of the liquid crystal ( n eff ) and the refractive index of the polymer matrix ( n p ) at large viewing angles. Thereby, factors affecting the viewing angle of a PDLC film are analyzed in this research, including the birefringence of the liquid crystal (Δ n ), film thickness, and the refractive index of the polymer matrix ( n p ). Balanced electro-optical properties are guaranteed simultaneously. It is found that high on-state transmittance and low off-axis haze can be achieved at large viewing angles in the suggested optimized case where Δ n is within the range of 0.1–0.13; the film thickness is between 20 μm and 15 μm; and n p approaches n o but the difference does not exceed 0.03.
Type of Medium:
Online Resource
ISSN:
1463-9076
,
1463-9084
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
1476283-3
detail.hit.zdb_id:
1476244-4
detail.hit.zdb_id:
1460656-2
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