CN207082536U

CN207082536U - Thin-film solar cells

Info

Publication number: CN207082536U
Application number: CN201720912020.5U
Authority: CN
Inventors: 王士敏; 赵湘辉; 李绍宗; 朱泽力; 古海裕
Original assignee: Shenzhen Laibao Hi Tech Co Ltd
Current assignee: Shenzhen Laibao Hi Tech Co Ltd
Priority date: 2017-07-25
Filing date: 2017-07-25
Publication date: 2018-03-09
Anticipated expiration: 2027-07-25

Abstract

A kind of thin-film solar cells, including substrate, dorsum electrode layer, Window layer, cushion, light absorbing layer and the upper electrode layer overlapped successively, dorsum electrode layer is located at substrate side, Window layer is located at side of the dorsum electrode layer away from substrate, cushion is located at side of the Window layer away from dorsum electrode layer, light absorbing layer is located at side of the cushion away from Window layer, and upper electrode layer is located at side of the light absorbing layer away from cushion, and sunshine enters thin-film solar cells from side of the substrate away from dorsum electrode layer.Thin-film solar cells provided by the utility model, on the premise of solar cell photoelectric conversion efficiency is kept, realize the lightening of solar cell module.

Description

Thin-film solar cells

Technical field

It the utility model is related to technical field of solar batteries, more particularly to a kind of thin-film solar cells.

Background technology

The development of the industrial revolution brings the lance for also triggering while happiness and exacerbating between man and nature to human society Shield.On the one hand, the mankind cause energy shortage problem getting worse to immoderate ask for of the Nature milli, and if things go on like this, we will Descendants is put in resource exhaustion, the available awkward condition of energy free；On the other hand, a large amount of of the fossil energy such as oil, coal make With causing ecological environment drastically to deteriorate, water, air are all sloughed off gradually becomes malicious water, poison gas, corroded the mankind survive no The material base that can or lack：The Sustainable Development of inter-generational equity and the mankind have to face and pay reality jointly as the world today Make great efforts to solve the problems, such as.

Develop green alternative energy source, especially develop solar cell, be the effective way to solve the above problems.

Solar cell is using the photovoltaic effect (i.e. photovoltaic effect) of semi-conducting material that solar radiant energy is direct Electric energy is converted to, is a kind of cheap, cleaning, efficient, free of contamination " green " novel energy.Wherein CIGS (abbreviation CIGS) Thin-film solar cells is due to manufacturing cost is low, stable performance, capability of resistance to radiation is strong, spectral response range is wide, photoelectricity turns The advantages that changing efficiency high, by it is internationally recognized be most promising solar cell of future generation.

In the prior art, CIGS thin film solar cell typical structure is：Substrate glass, Mo back electrodes, CIGS absorbed layers, CdS cushions, intrinsic ZnO and AZO Window layers, Ni-Al gate electrodes, MgF2 anti-reflection layers, complete to need upper after prepared by battery pack Face is bonded protective glass by EVA again, i.e. CIGS solar cells comprise at least two panels glass substrate.

However, in some application fields, it is desirable to which solar cell module is lightening.For example, in solar cell module Require that solar cell module is lightening with building application (BIPV, the abbreviation BIPV) field being combined, realize Solar components are lightening be advantageous to accelerate Building technology and photovoltaic technology further combined with promoting BIPV It is fast-developing.

On the premise of solar cell photoelectric conversion efficiency is kept, realize that the lightening of solar cell is solar-electricity One, pool technology field technical problem urgently to be resolved hurrily.

Utility model content

For prior art problem, the utility model provides a kind of thin-film solar cells, is keeping solar cell light On the premise of photoelectric transformation efficiency, the lightening of solar cell module can be realized.

The utility model provides a kind of thin-film solar cells, including overlap successively substrate, dorsum electrode layer, Window layer, Cushion, light absorbing layer and upper electrode layer, the dorsum electrode layer are located at the substrate side, and the Window layer is positioned at the back of the body electricity Side of the pole layer away from the substrate, the cushion are located at side of the Window layer away from the dorsum electrode layer, the light Absorbed layer is located at side of the cushion away from the Window layer, and the upper electrode layer is located at the light absorbing layer away from described The side of cushion, sunshine enter the thin-film solar cells from side of the substrate away from the dorsum electrode layer.

In the utility model preferred embodiment, the thin-film solar cells also includes one first groove, and described first is recessed Groove is that the substrate for having the dorsum electrode layer to deposition by using laser is delineated, described in being removed in the form of fine rule A part for dorsum electrode layer is patterned formed pattern

Further, the thin-film solar cells also includes one second groove, and second groove is by using quarter Pin or laser are delineated to the substrate for having deposited the light absorbing layer, by inclined as reference position using first groove Ormal weight is moved, the part of the Window layer, the cushion and the light absorbing layer is removed in the form of fine rule to be patterned The pattern formed

Further, the thin-film solar cells also includes one the 3rd groove, the 3rd groove refer to by using Cutting stylus or laser are delineated to the substrate for having deposited the upper electrode layer, by with first groove or described second Groove is that reference position offsets ormal weight, and Window layer, the cushion, the light absorbing layer and the institute are removed in the form of fine rule The part of upper electrode layer is stated to be patterned formed pattern.

In the utility model preferred embodiment, the thin-film solar cells also includes a protective layer, and the protective layer is set It is placed in side of the upper electrode layer away from the light absorbing layer.

Further, the protective layer is metal oxide or metal oxynitride.

In the utility model preferred embodiment, the thin-film solar cells also includes an antireflection film layer, the anti-reflection Film layer is arranged at side of the upper electrode layer away from the light absorbing layer.

The utility model preferred embodiment provide thin-film solar cells, including overlap successively substrate, dorsum electrode layer, Window layer, cushion, light absorbing layer and upper electrode layer.Sunshine enters institute from side of the substrate away from the dorsum electrode layer State thin-film solar cells.On the premise of solar cell photoelectric conversion efficiency is kept, the utility model preferred embodiment carries The thin-film solar cells of confession eliminates one piece of glass substrate relative to prior art, alleviates the weight of thin-film solar cells Amount, realizes the lightening of solar cell.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：

Fig. 1 is the structural representation for the thin-film solar cells that the utility model preferred embodiment provides.

Embodiment

To illustrate the thin-film solar cells of the utility model embodiment offer, said below in conjunction with Figure of description and word It is bright to be described in detail.

With reference to figure 1, Fig. 1 is the structural representation for the thin-film solar cells that the utility model preferred embodiment provides.This Utility model preferred embodiment provide thin-film solar cells, including overlap successively substrate 10, dorsum electrode layer 20, Window layer 30th, cushion 40, light absorbing layer 50 and upper electrode layer 60.The dorsum electrode layer 20 is located at the side of substrate 10, the window Layer 30 is located at side of the dorsum electrode layer 20 away from the substrate 10, and the cushion 40 is located at the Window layer 30 away from institute The side of dorsum electrode layer 20 is stated, the light absorbing layer 50 is located at side of the cushion 40 away from the Window layer 30, described Upper electrode layer 60 is located at side of the light absorbing layer 50 away from the cushion 40.Sunshine is from the substrate 10 away from described The side of dorsum electrode layer 20 enters the thin-film solar cells.

The material of the substrate 10 can be polyimides or PMMA, can also be other transparent bases.It is preferred that Ground, in the utility model preferred embodiment, the material of the substrate 10 is glass.

The material of the dorsum electrode layer 20 can be zinc oxide, gallium oxide, aluminum oxide, lead oxide, indium oxide, tin oxide, One kind in tin indium oxide, cupric oxide, iron oxide, tin ash or by it is therein two or more mutually adulterate shape Into mixture.Preferably, in the utility model preferred embodiment, the material of the dorsum electrode layer 20 is tin indium oxide.

In the utility model preferred embodiment, the material of the Window layer 30 is i-ZnO.

The material of the cushion 40 can be CdS, CdZnS, ZnS, Zn (S, O), Zn (OH, S), ZnS (O, OH), ZnSe, ZnInS, ZnInSe, ZnMgO, Zn (Se, OH), ZnSnO, ZnO, InSe, InOH, In (OH, S), In (OOH, S), In One kind in (S, O) or by it is therein two or more mutually adulterate the mixture formed.

The light absorbing layer 50 can be Cu-In-Se, Cu-In-S, Cu-Ga-Se, Cu-Ga-S, Cu-In-Ga-Se, Cu- In-Ga-Se- (S, Se), Cu-In-Al-Ga- (S, Se), Cu-In-Al-Ga-Se-S CIS or CIGS class compounds in one Kind or CZTS, it can also be that other have by the amount of absorbing solar energy to form electron-hole pair and then produce electricity The compound of energy.Preferably, in the utility model preferred embodiment, the absorbed layer be Cu-In-Al-Ga-Se-S CIS or One kind in CIGS class compounds.

The material of the upper electrode layer 60 can be zinc oxide, gallium oxide, aluminum oxide, lead oxide, indium oxide, tin oxide, One kind in tin indium oxide, cupric oxide, iron oxide, tin ash or by two or more in this several oxide The mixture that mutually doping is formed, one kind in nickel, aluminium, molybdenum, copper, silver, gold is can also be, can also be by this several metal Two or more alloys formed, more can be by the lamination of two or more in this several metal.Preferably, this reality With in new preferred embodiment, the material of the dorsum electrode layer 20 is tin indium oxide.

Preferably, in the utility model preferred embodiment, the thin-film solar cells also includes one first groove 81, one Second groove 82 and one the 3rd groove 83.First groove 81 refers to the base for having dorsum electrode layer 20 to deposition by using laser Plate 10 is delineated, and makes to be patterned formed pattern by removing a part for dorsum electrode layer 20 in the form of fine rule；Institute State the second groove 82 to refer to delineate the substrate 10 for having deposited light absorbing layer 50 by using cutting stylus or laser, by with institute State the first groove 81 and offset ormal weight for reference position, Window layer 30, cushion 40 and light absorbing layer 50 are removed in the form of fine rule A part be patterned formed pattern；3rd groove 83 refer to by using cutting stylus or laser to having deposited on The substrate 10 of electrode layer 60 is delineated, by being reference position skew rule with first groove 81 or second groove 82 It is quantitative, the part of Window layer 30, cushion 40, light absorbing layer 50 and upper electrode layer 60 is removed in the form of fine rule to be patterned The pattern formed.

In some embodiments of the utility model, the thin-film solar cells can also include a protective layer, described Protective layer is arranged on the upper electrode layer 60, and the protective layer is metal oxide or metal oxynitride.

In some embodiments of the utility model, the thin-film solar cells can also include antireflection film layer, institute Antireflection film layer is stated to be arranged on the upper electrode layer 60.The antireflective coating can be made up of one or more layers；Antireflection film layer It can be made up of one layer of magnesium fluoride, or be less than 1.70 second material layer by first material layer of the refractive index more than 1.80 and refractive index Composition, or be made up of other materials suitable for antireflection film layer.

It is the preferred embodiment of thin-film solar cells provided by the utility model above, can not be interpreted as to this practicality The limitation of new rights protection scope, those skilled in the art will be appreciated that, without departing from the concept of the premise utility, A variety of improvement or replacement can also be done, all improvement or replace all should be in rights protection scope of the present utility model, i.e. this reality It should be defined with new rights protection scope by claim.

In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.

Claims

A kind of 1. thin-film solar cells, it is characterised in that including overlap successively substrate, dorsum electrode layer, Window layer, buffering Layer, light absorbing layer and upper electrode layer, the dorsum electrode layer are located at the substrate side, and the Window layer is located at the dorsum electrode layer Side away from the substrate, the cushion are located at side of the Window layer away from the dorsum electrode layer, the light absorbs Layer is located at side of the cushion away from the Window layer, and the upper electrode layer is located at the light absorbing layer away from the buffering The side of layer, sunshine enter the thin-film solar cells from side of the substrate away from the dorsum electrode layer.
2. thin-film solar cells as claimed in claim 1, it is characterised in that the thin-film solar cells also includes one the One groove, first groove are that the substrate for having the dorsum electrode layer to deposition by using laser is delineated, and are passed through The part of the dorsum electrode layer is removed in the form of fine rule to be patterned formed pattern.
3. thin-film solar cells as claimed in claim 2, it is characterised in that the thin-film solar cells also includes one the Two grooves, second groove are that the substrate for having deposited the light absorbing layer is carved by using cutting stylus or laser Draw, by offseting ormal weight by reference position of first groove, the Window layer, the cushion are removed in the form of fine rule Formed pattern is patterned with the part of the light absorbing layer.
4. thin-film solar cells as claimed in claim 3, it is characterised in that the thin-film solar cells also includes one the Three grooves, the 3rd groove refer to carve the substrate for having deposited the upper electrode layer by using cutting stylus or laser Draw, by offseting ormal weight as reference position using first groove or second groove, the window is removed in the form of fine rule Mouthful layer, the cushion, a part for the light absorbing layer and the upper electrode layer are patterned formed pattern.
5. thin-film solar cells as claimed in claim 1, it is characterised in that the thin-film solar cells also includes one and protected Sheath, the protective layer are arranged at side of the upper electrode layer away from the light absorbing layer.
6. thin-film solar cells as claimed in claim 5, it is characterised in that the protective layer is metal oxide or metal Nitrogen oxides.
7. thin-film solar cells as claimed in claim 1, it is characterised in that the thin-film solar cells also subtracts including one Reflective coating, the antireflection film layer are arranged at side of the upper electrode layer away from the light absorbing layer.