Nitto-Denko Corporation

Bogumila Rachwal

Peng Wang

Michiharu Yamamoto

Stanislaw Rachwal

Hongxi Zhang

Zongcheng Jiang

Shuangxi Wang

Tao Gu

Isamu Kitahara

Yufen Hu

Jie Cai

Ozair Siddiqui

Sergey Simavoryan

Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.

Chromophores for photochromic compositions useful for three dimensional display applications

This invention relates to an encapsulation structure comprising a luminescent wavelength conversion material for at least one solar cell or photovoltaic device which acts to enhance the solar harvesting efficiency of the solar cell device. The luminescent wavelength conversion material comprises at least one chromophore and an optically transparent polymer matrix. Application of the encapsulation structure, as disclosed herein, to solar harvesting devices, including solar cells, solar panels, and photovoltaic devices, improves the solar harvesting efficiency of the device by widening the spectrum of incoming sunlight that can be effectively converted into electricity by the device.

Wavelength conversion material as encapsulate for solar module systems to enhance solar harvesting efficiency

Described herein are wavelength conversion films that are easy-to-apply to solar cells, solar panels, or photovoltaic devices using an adhesive layer. The wavelength conversion films include a wavelength conversion layer with a photostable chromophore and are useful for improving the solar harvesting efficiency of solar cells, solar panels, and photovoltaic devices.

Wavelength conversion film having pressure sensitive adhesive layer to enhance solar harvesting efficiency

The invention provides highly fluorescent materials comprising a single (n=0) or a series (n=1, 2, etc.) of benzo heterocyclic systems. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices.

Highly-fluorescent and photo-stable chromophores for enhanced solar harvesting efficiency

This invention is related to novel perylene diester derivatives represented by the general formula (I) or general formula (II) as described herein. The derivatives are useful in various applications, such as luminescent dyes for optical light collection systems, fluorescence-based solar collectors, fluorescence-activated displays, and/or single-molecule spectroscopy. The invention also relates to a luminescent medium, such as a luminescent film, that can significantly enhance the solar harvesting efficiency of thin film CdS/CdTe or CIGS solar cells. The luminescent medium comprises an optically transparent polymer matrix and at least one luminescent dye that comprises a perylene diester derivative. Over 16% of an efficiency enhancement to a CdS/CdTe solar cell and over 12% of an efficiency enhancement to a CIGS solar cell can be achieved.

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Oceanside, CA, United States of America

Bogumila Rachwal