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Graphene-cadmium selenide nanobelt heterojunction, battery, component and preparation method

A cadmium selenide and nanoribbon technology, applied in the field of nanomaterial-based solar cells, can solve problems such as high cost, material purity and preparation process limitations, and large-scale popularization and application constraints, and achieve simple manufacturing process, simple structure, and low cost. The effect of production costs

Inactive Publication Date: 2011-12-07
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Monocrystalline silicon solar cells have the highest photoelectric conversion efficiency and mature technology, but their large-scale popularization and application are restricted to a certain extent due to the limitations of high cost, material purity and manufacturing process.

Method used

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  • Graphene-cadmium selenide nanobelt heterojunction, battery, component and preparation method
  • Graphene-cadmium selenide nanobelt heterojunction, battery, component and preparation method
  • Graphene-cadmium selenide nanobelt heterojunction, battery, component and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Ordinary glass slides are ultrasonically cleaned with deionized water and absolute ethanol, and dried for later use; cadmium selenide nanobelts prepared by chemical vapor deposition are dissolved in ethanol to form ethanol suspensions of cadmium selenide nanobelts for later use ; Graphene film on copper foil prepared by chemical vapor deposition, using HCl and FeCl in conventional technology 3 .6H 2 O (molar ratio 1:1) mixed solution, after dissolving the copper foil, the graphene film floats on the surface of the solution, and is repeatedly transferred to clean deionized water to remove excess ions, and finally the clean graphene film Float on the surface of deionized water and set aside.

[0048] Get above-mentioned glass slide as transparent insulating smooth substrate, on the substrate, drop a drop of ethanol suspension that contains a cadmium selenide nanoribbon (length is 1.4mm, thickness is about 50nm), after ethanol volatilizes, with The base of the cadmium se...

Embodiment 2

[0051] The poured PDMS (thickness is about 1mm) is standby; the cadmium selenide nanobelt prepared by chemical vapor deposition method is dissolved in ethanol to form the ethanol suspension of cadmium selenide nanobelt for standby; the cadmium selenide nanobelt prepared by chemical vapor deposition is standby; Graphene films using HCl and FeCl 3 .6H 2 O (molar ratio 1:1) mixed solution, after dissolving the copper foil, the graphene film floats on the surface of the solution, and is repeatedly transferred to clean deionized water to remove excess ions, and finally the clean graphene film Float on the surface of deionized water and set aside.

[0052] Take a piece of PDMS as a transparent insulating flexible substrate, drop a drop of ethanol suspension containing a cadmium selenide nanoribbon (1mm in length, about 150nm in thickness) on the substrate, after the ethanol volatilizes, use a cadmium selenide nanoribbon For the base of the nanobelt, pick up the graphene film on th...

Embodiment 3

[0055] Ordinary glass slides are ultrasonically cleaned with deionized water and absolute ethanol, and dried for later use; cadmium selenide nanobelts prepared by chemical vapor deposition are dissolved in ethanol to form ethanol suspensions of cadmium selenide nanobelts for later use ; Graphene films on copper foil prepared by chemical vapor deposition using HCl and FeCl 3 .6H 2 O (molar ratio 1:1) mixed solution, after dissolving the copper foil, the graphene film floats on the surface of the solution, and is repeatedly transferred to clean deionized water to remove excess ions, and finally the clean graphene film Float on the surface of deionized water and set aside.

[0056] Take the above-mentioned glass slide as a transparent insulating smooth substrate, drop a drop of ethanol suspension containing a cadmium selenide nanoribbon (1.5mm long, about 200nm thick) on the substrate, after the ethanol volatilizes, use The substrate of the cadmium selenide nanobelt is picked u...

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Abstract

The invention provides a graphene-cadmium selenide nanoribbon heterojunction, relates to a graphene-cadmium selenide nanoribbon heterojunction solar cell, provides a method for preparing the solar cell, and relates to a parallel module of the graphene-cadmium selenide nanoribbon heterojunction solar cell and a preparation method of the parallel module. The graphene-cadmium selenide nanoribbon heterojuntion consists of a graphene thin film and a cadmium selenide nanoribbon; and the solar cell comprises the graphene-cadmium selenide nanoribbon heterojuntion, a wire and various substrates. The heterojunction, the solar cell and the cell module provided by the invention have the advantages of simple structure and small volume, can be stable for a long time in the air, are applicable to mass production and have good application prospects. Moreover, the preparation method is simple and convenient.

Description

technical field [0001] The invention belongs to the field of nanomaterial-based solar cells, and in particular relates to a graphene-cadmium selenide nanobelt heterojunction, a solar cell, a parallel assembly of the solar cell and a preparation method thereof. Background technique [0002] Solar energy is a clean and renewable energy source. Utilizing and converting solar energy is an important way to solve energy crisis and environmental pollution, and developing solar cells is one of the most effective ways to utilize solar energy. Monocrystalline silicon solar cells have the highest photoelectric conversion efficiency and mature technology, but their large-scale popularization and application are restricted to a certain extent due to the limitations of high cost, material purity and manufacturing process. [0003] The development and utilization of nanomaterials to prepare photovoltaic devices is an effective way to simplify the preparation process, improve efficiency and...

Claims

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Application Information

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IPC IPC(8): H01L31/07H01L31/0352H01L31/18
CPCY02E10/50Y02P70/50
Inventor 曹安源张鲁辉范丽丽李祯朱宏伟王昆林吴德海
Owner PEKING UNIV
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