CN205881922U

CN205881922U - High -efficient thin -film solar cell

Info

Publication number: CN205881922U
Application number: CN201620581333.2U
Authority: CN
Inventors: 张孝勇; 翟伟翔
Original assignee: China Datang Corp Science and Technology Research Institute Co Ltd
Current assignee: China Datang Corp Science and Technology Research Institute Co Ltd
Priority date: 2016-06-15
Filing date: 2016-06-15
Publication date: 2017-01-11
Anticipated expiration: 2026-06-15

Abstract

The utility model relates to a high -efficient thin -film solar cell, include and follow glass substrate, back electrode layer, absorbed layer, buffer layer, the transparent electrode layer that up sets gradually down and subtract the layer of turning over, the absorbed layer is the CIGS thin layer, the buffer layer is the cdS thin layer, still includes the fresnel lens layer, the fresnel lens layer sets up subtract the top on the layer of turning over, the transparent electrode layer is transparent TCO thin layer, is the thickness on fresnel lens layer 50nm 100nm, two upper and lower surfaces of fresnel lens are incident surface and emitting face respectively, the incident surface is smooth plane, the emitting face has the spiral helicine cingulum of a plurality of circles, cingulum average price interval sets up and is concentric tooth, still include the vacuum layer, the vacuum level in the fresnel lens layer with subtract and turn over between the layer, is the thickness on vacuum layer 100 300nm, still include silver -colored thin layer, the silver thin layer is located the transparent electrode layer with between the buffer layer, is the thickness of silver thin layer 10nm 20nm.

Description

A kind of efficient thin-film solar cell

Technical field

This utility model relates to field of solar thermal power generation, particularly relates to a kind of efficient thin-film solar cell.

Background technology

At present, solar energy is popular to people as a kind of new forms of energy, and the most various solar products constantly occur, conversion Efficiency is more and more higher, the most just includes thin-film solar cells.

In recent years, " abandoning light " problem of field of photovoltaic power generation is more and more prominent, and it is right that existing thin-film solar cells lacks Condensation photovoltaic technology is applied, and causes light absorption low, have impact on generated energy.

Thin-film solar cells in the market is varied, but more or less has some defects, and have can only profit With the luminous energy of a certain wave band of sunlight, the light that wavelength is longer or wavelength is shorter all can not be utilized effectively；Some electric conductivities Relatively poor；Have can not fully absorb light, is often gone out by divergence of beam, causes solar energy utilization ratio low, generating Inefficient, generated energy is low.

Because above-mentioned defect, the design people, the most in addition research and innovation, to founding a kind of efficient thin-film solar Battery so that it is have more the value in industry.

Utility model content

For solving above-mentioned technical problem, the purpose of this utility model is to provide one can improve solar energy utilization ratio, carries The efficient thin-film solar cell of high generated energy.

A kind of efficient thin-film solar cell of the present utility model, including the glass substrate set gradually from the bottom up, the back of the body Electrode layer, absorbed layer, cushion, transparent electrode layer and anti-reflection layer, it is characterised in that: described absorbed layer is CIGS thin film layer, institute Stating cushion is CdS film layer, also includes that Fresnel Lenses layer, described Fresnel Lenses layer are arranged on the upper of described anti-reflection layer Side, described transparent electrode layer is transparent TCO thin film layer, and the thickness of described Fresnel Lenses layer is 50nm-100nm, described luxuriant and rich with fragrance alunite You are respectively the plane of incidence and exit facet in two surfaces up and down of lens, and the described plane of incidence is smooth flat, and described exit facet has The spiral helicine cingulum of some circles, described cingulum average price interval arranges and is concentric teeth；

Also include vacuum layer, described vacuum layer between described Fresnel Lenses layer and described anti-reflection layer, described vacuum The thickness of layer is 100-300nm；

Also include Ag films layer, described Ag films layer between described transparent electrode layer and described cushion, described silver The thickness of thin layer is 10nm-20nm.

Further, the center of described exit facet has the central smoothing district without cingulum, described spiral helicine cingulum in by The central smoothing district of described exit facet is to the edge spiral of described exit facet.

Further, described cingulum is 5-10 circle.

Further, the acrylic acid Fresnel Lenses that described Fresnel Lenses is made up of acrylic resin.

Further, the rounded tabular of described Fresnel light condensing lens or square tabular.

Further, described central smoothing district is circular.

By such scheme, this utility model at least has the advantage that this efficient thin-film solar cell is by luxuriant and rich with fragrance alunite You make light optically focused by lens, improve the utilization rate of sunlight, so that the photoelectricity that the solar film battery of unit are produces The photoelectric current that fluxion Radix Achyranthis Bidentatae produces under the conditions of natural lighting, and then improve generated energy.

It is prevented from light by vacuum layer to disperse, improves the utilization rate of light further.

By Ag films layer, there is high permeability, the characteristic of excellent electric conductivity, it is possible to make the conduction of thin-film solar cells Performance is greatly improved.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed Describe in detail bright as after.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of efficient thin-film solar cell of this utility model；

Fig. 2 is the schematic cross-section of Fresnel Lenses of the present utility model；

Fig. 3 is the exit facet schematic diagram of Fresnel Lenses of the present utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.

Embodiment: a kind of efficient thin-film solar cell, including the glass substrate 1 set gradually from the bottom up, back electrode Layer 2, absorbed layer 3, cushion 4, transparent electrode layer 5 and anti-reflection layer 6, described absorbed layer is CIGS thin film layer, and described cushion is CdS film layer, also includes that Fresnel Lenses layer 7, described Fresnel Lenses layer are arranged on the top of described anti-reflection layer, described transparent Electrode layer is transparent TCO thin film layer, and the thickness of described Fresnel Lenses layer is 50nm-100nm, described Fresnel Lenses upper and lower Two surfaces are respectively the plane of incidence 8 and exit facet 9, and the described plane of incidence is smooth flat, and described exit facet has some circle spirals The cingulum 10 of shape, described cingulum average price interval arranges and is concentric teeth；

Also include vacuum layer 12, described vacuum layer between described Fresnel Lenses layer and described anti-reflection layer, described very The thickness of dead level is 100-300nm；

Also including Ag films layer 13, described Ag films layer is between described transparent electrode layer and described cushion, described The thickness of Ag films layer is 10nm-20nm.

The center of described exit facet has the central smoothing district 11 without cingulum, and described spiral helicine cingulum is in by described outgoing The central smoothing district in face is to the edge spiral of described exit facet.

Described cingulum is 5-10 circle.

The acrylic acid Fresnel Lenses that described Fresnel Lenses is made up of acrylic resin.

The rounded tabular of described Fresnel light condensing lens or square tabular.

Described central smoothing district is circular.

This efficient thin-film solar cell makes light optically focused by Fresnel Lenses, improves the utilization rate of sunlight, thus The photoelectric current produced under the conditions of making hundreds of times of natural lightings of photoelectric current that the solar film battery of unit are produces, and then Improve generated energy.

Ag films layer has high permeability, the characteristic of excellent electric conductivity, it is possible to make the electric conductivity of thin-film solar cells It is greatly improved.

The above is only preferred implementation of the present utility model, is not limited to this utility model, it is noted that For those skilled in the art, on the premise of without departing from this utility model know-why, it is also possible to do Going out some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.

Claims

1. an efficient thin-film solar cell, including the glass substrate set gradually from the bottom up, dorsum electrode layer, absorbed layer, Cushion, transparent electrode layer and anti-reflection layer, it is characterised in that: described absorbed layer is CIGS thin film layer, and described cushion is that CdS is thin Film layer, also includes that Fresnel Lenses layer, described Fresnel Lenses layer are arranged on the top of described anti-reflection layer, described transparent electrode layer For transparent TCO thin film layer, the thickness of described Fresnel Lenses layer is 50nm-100nm, two tables up and down of described Fresnel Lenses Face is respectively the plane of incidence and exit facet, and the described plane of incidence is smooth flat, and described exit facet has the spiral helicine cingulum of some circles, Described cingulum average price interval arranges and is concentric teeth；

Also include vacuum layer, described vacuum layer between described Fresnel Lenses layer and described anti-reflection layer, described vacuum layer Thickness is 100-300nm；

Also include Ag films layer, described Ag films layer between described transparent electrode layer and described cushion, described Ag films The thickness of layer is 10nm-20nm.

A kind of efficient thin-film solar cell the most according to claim 1, it is characterised in that: the center tool of described exit facet With or without the central smoothing district of cingulum, described spiral helicine cingulum in by the central smoothing district of described exit facet to described exit facet Edge spiral.

A kind of efficient thin-film solar cell the most according to claim 2, it is characterised in that: described cingulum is 5-10 circle.

A kind of efficient thin-film solar cell the most according to claim 3, it is characterised in that: described Fresnel Lenses be by The acrylic acid Fresnel Lenses that acrylic resin is made.

A kind of efficient thin-film solar cell the most according to claim 4, it is characterised in that: described Fresnel light condensing lens Rounded tabular or square tabular.

A kind of efficient thin-film solar cell the most according to claim 5, it is characterised in that: described central smoothing district is circle Shape.