Solar light condensation plate based on quantum dot-phosphorescent organic molecule hybrid material
A technology of solar energy concentration and organic molecules, which is applied in photovoltaic power generation, photovoltaic modules, electrical components, etc., and can solve the problems of low efficiency of solar energy concentration panels
Active Publication Date: 2020-03-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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[0005] The purpose of the present invention is to provide a high-efficiency solar concentrating panel based on quantum dot-phosphorescent organic molecule hybrid materials to solve the technical problem of low efficiency of solar concentrating panels
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[0020] A high-efficiency solar energy concentrating panel based on quantum dot-phosphorescent organic molecule hybrid material described in this embodiment, its preparation method includes the following steps:
[0021] A chloroform solution (10 mL) of 0.1 μmol CdTe quantum dots and 2 mg of Pt (tpbp) molecules were mixed and placed in an ultrasonic machine for 10 minutes of ultrasonication. Under the premise of rapid stirring, 5 ml of deionized water was quickly injected into it to obtain CdTe-Pt (tpbp) nanoparticles. Immediately afterwards, the above-mentioned nanoparticles were mixed with 0.6 g of polyvinylpyrrolidone and stirred for 10 hours, and finally it was evenly coated on a glass substrate by a doctor blade casting method, and left to stand until the solvent was completely evaporated to form a solar concentrator, such as figure 1 shown.
[0022] Whether the solar concentrating panels we have prepared can achieve high optical efficiency needs to be verified by combinin...
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Abstract
The invention relates to an efficient solar light condensation plate based on a quantum dot-phosphorescent organic molecule hybrid material. According to the solar light condensation plate, quantum dots are mainly used as a light absorption material, phosphorescent organic molecules are used as a light emission material, and a polymer is used as an optical waveguide medium. High extinction coefficient of quantum dots is utilized to efficiently absorb light, energy is transferred to phosphorescent organic molecules, self-absorption loss is effectively reduced through large spectral Stokes shiftof the phosphorescent organic molecules, and finally photoelectric conversion is achieved from polymer optical waveguide to a solar cell on the side face. The phosphorescent organic molecule has highphosphorescent emission efficiency. Preferred scheme, the polymer is polyvinylpyrrolidone (PVP), the quantum dot is cadmium telluride (CdTe), optimal spectrum matching can be achieved between the polymer and a phosphorescent organic molecule Pt-tetrabenzoporphrin (Pt (tpbp)), and finally the external quantum efficiency as high as 9% is obtained.
Description
technical field [0001] The invention relates to a high-efficiency solar concentrating panel based on quantum dot-phosphorescent organic molecule hybrid materials. Background technique [0002] Solar concentrators (LSCs) are fluorescent devices that absorb sunlight and use the total reflection effect to gather fluorescence, which is then coupled to photovoltaic cells to generate electricity. Compared with conventional solar modules, LSCs have lower photovoltaic costs and the potential to realize (semi-)transparent smart windows. If its concentrating efficiency is high enough, an LSC plus a few solar cells at the edge is functionally equivalent to a whole large-area solar cell. Since the main part of LSC is composed of cheap plexiglass material plus a small amount of luminescent material, this technology may significantly reduce the cost of photovoltaic production capacity and bring about revolutionary changes in the field of photovoltaic production capacity. [0003] Despit...
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IPC IPC(8): H01L31/054H01L31/055H02S40/22
CPCH02S40/22H01L31/055H01L31/0547Y02E10/52
Inventor 吴凯丰罗消
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI