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Environment-friendly heavy metal-free quantum dot solar cell and manufacturing method thereof

A technology of solar cells and manufacturing methods, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve problems such as non-conformity and high toxicity, and achieve the effects of being beneficial to environmental protection, simple manufacturing process, and less environmental damage

Inactive Publication Date: 2014-03-05
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the photoelectric conversion materials currently used in colloidal proton dot solar cells mainly contain toxic heavy metal cations (such as Cd, Pb, etc.), which are highly toxic and do not meet the requirements of "green" environmental protection.

Method used

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  • Environment-friendly heavy metal-free quantum dot solar cell and manufacturing method thereof
  • Environment-friendly heavy metal-free quantum dot solar cell and manufacturing method thereof
  • Environment-friendly heavy metal-free quantum dot solar cell and manufacturing method thereof

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Experimental program
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Embodiment

[0036] First, according to image 3 As described above, the substrate 1 with the ITO electrode 2 is cleaned by ultrasonic cleaning, and placed in cleaning solution, deionized water, acetone and isopropanol for cleaning twice, each time for 15 minutes. After baking at 150°C for 10 minutes, UV treatment was performed.

[0037] Secondly, the PEDOT:PSS layer 3 is spin-coated on the ITO electrode 2 by the spin-coating method, and the spin-coating thickness is about 30nm, and then 2 Anneal at 150°C for 10 minutes at ambient, see Figure 4 shown.

[0038] Third, on the PEDOT:PSS layer 3, spin-coat CuInS 2 / ZnS QDs layer 4, see Figure 5 . On spin-coated CuInS 2 / ZnSQDs layer 4 must have an annealing step at 120 °C, which can remove the solvent in the solution.

[0039] Among them, copper indium sulfide (CuInS 2 ) colloidal quantum dots and CuInS 2 / ZnS QDs were synthesized as follows:

[0040] copper indium sulfide (CuInS 2 ) The synthesis of colloidal quantum dots is in t...

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Abstract

The invention relates to an environment-friendly heavy metal-free quantum dot solar cell and a manufacturing method thereof, and belongs to the technical field of advanced manufacturing of new energy resources. The cell mainly comprises a substrate, a positive electrode, a hole collection layer, a photosensitive layer, a collection layer and a negative electrode, wherein the positive electrode is an ITO (indium tin oxide) electrode and is deposited on the substrate; sunlight can transmit through the ITO electrode and the substrate; the hole collection layer is a PEDOT:PSS (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)) layer with extremely strong electrical conductivity, and is spin-coated on the ITO electrode; the photosensitive layer is a CuInS2 / ZnS QDs layer positioned above the PEDOT:PSS layer; the collection layer is a ZnO nanofilm layer spin-coated on the CuInS2 / ZnS QDs layer; the negative electrode is an Al electrode evaporated on the ZnO nanofilm layer. According to the solar cell with the structure, the characteristics of high efficiency, flexibility and process simplicity of a quantum dot solar cell are maintained; in addition, the solar cell does not contain heavy metals, so that the requirement of environment friendliness is met.

Description

technical field [0001] The invention belongs to the technical field of advanced manufacturing of new energy, and relates to a novel environment-friendly heavy metal-free quantum dot solar cell structure and a manufacturing method thereof. The solar cell adopts heavy metal-free CuInS 2 / ZnS core-shell quantum dots (CuInS 2 / ZnS QDs) material, does not contain toxic heavy metals, and meets the requirements of green environmental protection. Background technique [0002] Using quantum dots with quantum confinement effect and discrete spectral characteristics to make solar cells can greatly improve the energy conversion efficiency of solar cells. Compared with other structural solar cells, quantum dot solar cells have the characteristics of high efficiency, low cost, and good flexibility. [0003] It can be seen that colloidal proton dot solar cells have good development prospects. However, the photoelectric conversion materials currently used in colloidal proton dot solar ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549H10K85/111H10K30/10H10K30/152H10K2102/00Y02P70/50
Inventor 张宇翟微微刘文闫于伟泳王一丁张佳全张铁强林晓珑高文竹冯毅
Owner JILIN UNIV
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