Photoaligned Nanorod Enhancement Films with Polarized Emission for Liquid-Crystal-Display Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Abhishek K. Srivastava
  • Wanlong Zhang
  • Vladimir G. Chigrinov
  • Hoi-Sing Kwok

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1701091
Journal / PublicationAdvanced Materials
Volume29
Issue number33
Online published28 Jun 2017
Publication statusPublished - 6 Sep 2017

Abstract

Semiconductor nanorods (NR) emit polarized light, which is expected to bring manifold benefits, in terms of brightness and color enhancement, for modern liquid-crystal displays (LCD). In this regard, photoaligned nanorod enhancement films (NREF) for color and polarization conversion for LCD backlights are introduced here. The photoinduced anchoring forces, by the photoalignment layer, stimulate well-ordered self-assembly of NR in the thin polymer films. Green and red emitting NR with a quantum yield of ≈80% are aligned unidirectionally and in-plane, showing a polarization ratio of >7:1 and a degree of polarization of >0.81. The photoalignment technique facilitates the fabrication of mixed and multiple stacked NREF for LCDs, which improves the color gamut and polarization efficiency, and is thus expected to increase the optical efficiency of conventional LCDs by ≈60%.

Research Area(s)

  • liquid crystal display, liquid crystal polymer, photoalignment, polarized emission, semiconductor nanorods

Citation Format(s)

Photoaligned Nanorod Enhancement Films with Polarized Emission for Liquid-Crystal-Display Applications. / Srivastava, Abhishek K.; Zhang, Wanlong; Schneider, Julian; Rogach, Andrey L.; Chigrinov, Vladimir G.; Kwok, Hoi-Sing.

In: Advanced Materials, Vol. 29, No. 33, 1701091, 06.09.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal