Photoluminescent semiconductor nanocrystal-based luminescent solar concentrators

A technology of emitting solar energy and photoluminescence, which can be used in nano-optics, semiconductor devices, light guides doped with fluorescent agents, etc., and can solve problems such as failure.

Active Publication Date: 2016-04-13
WESTERN WASHINGTON UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these approaches have proven unsuccessful in fabricating large-area, high-efficiency LSCs with long environmental lifetimes.

Method used

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  • Photoluminescent semiconductor nanocrystal-based luminescent solar concentrators
  • Photoluminescent semiconductor nanocrystal-based luminescent solar concentrators
  • Photoluminescent semiconductor nanocrystal-based luminescent solar concentrators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180] Example 1. Preparation and Characterization of Representative Photoluminescence

[0181] nanoparticles

[0182] In this example, the preparation, characterization and use of representative photoluminescent nanoparticles of the present disclosure are described.

[0183] Fabrication and Characterization of LSCs Containing Photoluminescent Nanoparticles

[0184] LSCs were prepared and characterized based on several representative examples of photoluminescent nanoparticles with different structures and compositions. by heating at 270°C in N 2 Under gas pressure, and still in MnCl 2 Thermal decomposition of the tetramer (Me 4 N) 2 [Zn 4 (SePh) 10 ] 30-60 minutes to grow Mn:ZnSe / ZnS core-shell photoluminescent nanoparticles. Then, at 230°C in N 2 The resulting nanocrystals were coated with ZnS shells by continuous slow addition of zinc oleate and trioctylphosphine sulfide in octadecene and oleylamine solutions under gas pressure for 5–25 min. The particles wer...

Embodiment 2

[0205] Example 2: Photoluminescent Nanoparticles of the Disclosure Versus Known Photoluminescent Nanoparticles Comparison

[0206] This example evaluates whether photoluminescent nanoparticles of the present disclosure can reduce losses from self-absorption and scattering relative to other LSC emitters including other types of photoluminescent nanoparticles.

[0207] refer to Figure 18 , normalized waveguide photoluminescence intensity measured in linear, rod-shaped LSCs as a function of the distance between the excitation and collection positions was evaluated for two LSCs incorporating different types of photoluminescent nanoparticles. The first LSC comprises Mn:Zn synthesized as described in Example 1 1-x CD x Se / ZnS (where x value is about 0.1) photoluminescent nanoparticles. The second LSC includes CdSe / CdS nanoparticles, which are examples of "giant" shell core-shell semiconductor nanocrystals, a type of photoluminescent nanoparticle known to have small self-abso...

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Abstract

The present disclosure describes luminescent solar concentrators that include photoluminescent nanoparticles. The photoluminescent nanoparticles include a semiconductor nanocrystal that sensitizes the luminescence of a defect. The defect can include, for example, an atom, a cluster of atoms, or a lattice vacancy. The defect can be incorporated into the semiconductor nanocrystal, adsorbed onto, or otherwise associated with the surface of the semiconductor nanocrystal.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 61 / 841887, filed July 1, 2013, and US Patent Application No. 61 / 895,224, filed October 24, 2013, which are hereby incorporated by reference in their entirety. [0003] Statement of Government Licensing Rights [0004] This invention was made with government support under awards DMR-1035512 and DMR-1206221 from the National Science Foundation. The government has certain rights in this invention. Background technique [0005] Luminescent solar concentrators (LSCs) collect and concentrate sunlight for solar power generation. LSCs are devices that typically consist of a planar waveguide coated or impregnated with an illuminant. Sunlight absorbed by luminophores coated on or contained in the waveguide is re-emitted into the waveguide where it is captured by total internal reflection, which causes it to propagate to the edge to be concentrated for light conversio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L29/36
CPCH01L31/055C09K11/025C09K11/565C09K11/584C09K11/7773C09K11/883Y02E10/52Y10S977/774Y10S977/896Y10S977/948Y10S977/95B82Y20/00B82Y40/00G02B6/0003G02B19/0019G02B19/0042H01L31/02322
Inventor K·E·诺勒斯D·佩特瑞克J·基波尔特森S·麦克唐维尔C·埃里克森D·R·盖梅林L·布拉德肖E·J·麦克劳琳
Owner WESTERN WASHINGTON UNIVERSITY
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