CN105161561A - Semi-transparent CdZnTe (cadmium zinc telluride) film solar cell - Google Patents

Semi-transparent CdZnTe (cadmium zinc telluride) film solar cell Download PDF

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Publication number
CN105161561A
CN105161561A CN201510404295.3A CN201510404295A CN105161561A CN 105161561 A CN105161561 A CN 105161561A CN 201510404295 A CN201510404295 A CN 201510404295A CN 105161561 A CN105161561 A CN 105161561A
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China
Prior art keywords
solar cell
film
film solar
transparent
cdznte
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CN201510404295.3A
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Chinese (zh)
Inventor
武莉莉
冯良桓
李卫
张静全
王文武
徐航
黎兵
曾广根
刘才
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Sichuan University
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Sichuan University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/06Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers
    • H01L31/065Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the graded gap type
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/0296Inorganic materials including, apart from doping material or other impurities, only AIIBVI compounds, e.g. CdS, ZnS, HgCdTe
    • H01L31/02966Inorganic materials including, apart from doping material or other impurities, only AIIBVI compounds, e.g. CdS, ZnS, HgCdTe including ternary compounds, e.g. HgCdTe
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0352Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention belongs to the new energy material and device field and especially relates to a semi-transparent CdZnTe film solar cell used for exterior walls of buildings. A CdZnTe film serves as the absorption layer material of the film solar cell. The CdZnTe (material) is a direct gap semiconductor and has a high visible light absorption coefficient. The forbidden bandwidth of the CdZnTe can change from 1.5 eV to 2.2 eV with an increase in the zinc content. Therefore, film materials in different colors can be made by adjusting the proportions of the zinc and cadmium elements. The semi-transparent CdZnTe film solar cell structure is further formed by further adding transparent electrodes in the front and the back of the film materials. The semi-transparent film solar cell can have partial sunlight transmitted and further generate power with relatively high conversion efficiency. Therefore, the semi-transparent film solar cell becomes an ideal curtain wall for building integration.

Description

A kind of translucent tellurium zincium vestalium thin-film solar cell
Technical field
Field belonging to this invention is new energy field, particularly a kind of translucent thin film solar cell for skin.
Background technology
Solar cell utilize solar energy produce electric energy, but due to the power density conversion efficiency that is lower and solar cell of sunlight not high, make the construction in solar cell power station need to take large-area soil to accept enough sunlight.In the city that population is relatively concentrated and area, from the view point of Economization on land, integrated photovoltaic building is arisen at the historic moment.The feature of integrated photovoltaic building is that solar cell is covered building surface, makes the metope of building have the function of photovoltaic generation simultaneously, meets the power consumption in part building, thus effectively realize the object of energy-saving and emission-reduction.
Solar cell at present for integrated photovoltaic building has monocrystalline silicon battery, polycrystal silicon cell and amorphous silicon battery, and the feature of monocrystalline silicon and polycrystal silicon cell is that conversion efficiency is high, and technical maturity large area can be installed on building wall etc.But these two kinds of batteries do not have the feature of printing opacity, can not be used for the building higher to daylighting requirement, therefore translucent solar cell is suitable as the building use of integrated photovoltaic more.Amorphous silicon film battery is used successfully to building, but silicon materials are indirect gap semiconductors, lower to the absorption coefficient of sunlight, and adding it is non-crystalline material, and the conversion efficiency of this kind of single junction cell assembly only has about 7 ~ 8% usually, and generating efficiency is very low.
What Chinese patent CN101276854A and CN102254966A all proposed is tellurium zincium vestalium thin-film solar cell, is characterized in by utilizing the tellurium zincium vestalium thin-film with graded bandgap as the absorbed layer of battery, thus improves the absorption region to solar spectrum.But this tellurium zincium vestalium thin-film solar cell has tellurium zinc cadmium or the Cadimium telluride thin film of hundreds of ~ several thousand nanometer due to absorbed layer, also has the opaque back electrode material of tens nanometers, makes whole battery light tight, be therefore not suitable for use in the translucent curtain wall of building.
Summary of the invention
The object of the invention is the translucent thin film solar cell proposing a kind of new high-efficiency.The basic thought of the method utilizes tellurium zincium vestalium thin-film as the absorbed layer material of thin film solar cell, because tellurium zinc cadmium is direct gap semiconductor, to the absorption coefficient of visible ray up to 10 5cm -1and its energy gap is along with the relative amount of zinc, cadmium is from 1.5eV alterable to 2.2eV, therefore can prepare the thin-film material with different visible light ABSORPTION EDGE (different colours) by the ratio of modulation zinc, cadmium element, the transparency electrode before and after adding just can form translucent thin-film solar cell structure.This translucent thin film solar cell can permeation parts sunlight, also can generate electricity with higher conversion efficiency, thus become the desirable curtain wall of architecture-integral.
For realizing the object of the invention, the technical scheme that the present invention is made up of following measures realizes.White glass substrate is prepared transparent conductive film layer, n-type window layer, tellurium zinc Cd uptake layer, transparent dorsum electrode layer successively.Nesa coating (being called for short TCO) is ITO, SnO 2: F(FTO) or the N-shaped material such as ZnO:Al(ZTO), n-type window layer material is CdS or ZnS film.We show the result of study in early stage, and the energy gap of Cadimium telluride thin film and the relational expression of zinc component x are E g=1.525+0.675x, therefore translucent Cd 1-xzn xthe x of Te absorbed layer should between 0.1 ~ 1, and thickness is 100nm ~ 500nm.Battery structure has the following two kinds, (1) above-mentioned Cd 1-xzn xte film is intrinsic material, and battery adopts n-i-p structure, and N-shaped CdS or ZnS film are window layer material, Cd 1-xzn xte Intrinsic Gettering layer is as i layer, and ZnTe:Cu film is as p-type back contact, and transparent back electrode adopts p-type transparent conductive film (CuAlO 2or ZnO:N), as Fig. 1.(2) above-mentioned Cd 1-xzn xte film is p-type material (as after mixing copper), and battery adopts n-p junction structure, and N-shaped ZnS film is window layer material, Cd 1-xzn xte thin-film material is as p layer, and transparent back electrode adopts grapheme material, as Fig. 2.
Accompanying drawing explanation
Fig. 1 is TCO/CdS/Cd 1-xzn xthe tellurium zincium vestalium thin-film solar cell of Te/ZnTe:Cu/p type transparent conductive film structure.
Fig. 2 is TCO/ZnS/Cd 1-xzn xthe tellurium zincium vestalium thin-film solar cell of Te:Cu/ graphene-structured.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but content of the present invention is not limited only to the content that relates in embodiment.
embodiment one:
The first translucent Cd 1-xzn xas shown in Figure 1, battery is n-i-p structure to Te thin-film solar cell structure.At SnO 2: in the substrate of F/CdS room temperature, first coevaporation together with CdTe with ZnTe is formed Cd to substrate 1-xzn xte film, x is between 0.1 ~ 1, and thickness is 100nm ~ 500nm.By the Cd that evaporation obtains 1-xzn xte film takes out, and 300 DEG C ~ 350 DEG C annealing in drying nitrogen, are incubated 30 minutes, then naturally cool to room temperature.By the method for evaporating at Cd 1-xzn xznTe:Cu film prepared by Te film, thickness 50nm, then carry out 150 DEG C ~ 200 DEG C heat treatments at annealing furnace nitrogen atmosphere.Finally make the transparent back electrode of p-type with sputtering method plating 200nmZnO:N film.Obtain the first translucent Cd thus 1-xzn xte thin film solar cell.
embodiment two:
The translucent Cd of the second 1-xzn xas shown in Figure 2, battery is n-p junction structure to Te thin-film solar cell structure.At SnO 2: in the substrate of F/ZnS room temperature, first cosputtering together with CdTe, ZnTe and Cu tri-targets is formed Cd to substrate 1-xzn xte:Cu film, x is between 0.1 ~ 1, and thickness is 100nm ~ 500nm.By the Cd that sputtering obtains 1-xzn xte:Cu film takes out, and 300 DEG C ~ 350 DEG C annealing in drying nitrogen, are incubated 30 minutes, then naturally cool to room temperature.Plate 50 layer graphene films with sputtering method and make transparent back electrode.Obtain the translucent Cd of the second thus 1-xzn xte thin film solar cell.

Claims (7)

1. a translucent tellurium zincium vestalium thin-film solar cell, is characterized in that having the following two kinds structure: (1) TCO/CdS/Cd 1-xzn xthe transparent back electrode of Te/ZnTe:Cu/; (2) TCO/CdS/Cd 1-xzn xthe transparent back electrode of Te:Cu/.
2. structure as claimed in claim 1 is TCO/CdS/Cd 1-xzn xthe translucent tellurium zincium vestalium thin-film solar cell of the transparent back electrode of Te/ZnTe:Cu/, is characterized in that first depositing one deck Cd on TCO/CdS substrate 1-xzn xte film, then sequential aggradation ZnTe:Cu film and transparent back electrode.
3. structure as claimed in claim 1 is TCO/CdS/Cd 1-xzn xthe translucent tellurium zincium vestalium thin-film solar cell of the transparent back electrode of Te:Cu/, is characterized in that first depositing one deck Cd on TCO/CdS substrate 1-xzn xte:Cu film, then deposit transparent back electrode.
4. translucent tellurium zincium vestalium thin-film solar cell as claimed in claim 1, is characterized in that Cd 1-xzn xthe x of Te film should meet 0.1≤x≤1, and the band gap of respective films changes between 1.6eV ~ 2.2eV.
5. translucent tellurium zincium vestalium thin-film solar cell as claimed in claim 1, is characterized in that Cd 1-xzn xte or Cd 1-xzn xthe thickness of Te:Cu film is at 100nm ~ 500nm.
6. translucent tellurium zincium vestalium thin-film solar cell as claimed in claim 1, is characterized in that p-type Cd 1-xzn xte:Cu film adopts Cu to make dopant.
7. translucent tellurium zincium vestalium thin-film solar cell as claimed in claim 1, is characterized in that transparent back electrode adopts p-type nesa coating (CuAlO 2or p-ZnO) or Graphene.
CN201510404295.3A 2015-07-13 2015-07-13 Semi-transparent CdZnTe (cadmium zinc telluride) film solar cell Pending CN105161561A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105789455A (en) * 2016-03-24 2016-07-20 浙江零维光伏科技有限公司 Element doping method for organic thin film solar cell
CN109545881A (en) * 2018-10-29 2019-03-29 四川大学 A kind of CdS/CdTe solar cell of based single crystal silicon chip substrate
CN110544729A (en) * 2019-08-09 2019-12-06 中山瑞科新能源有限公司 CdTe double-sided solar cell and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101276854A (en) * 2008-05-09 2008-10-01 上海太阳能电池研究与发展中心 Tellurium zincium vestalium thin-film solar cell
CN102254966A (en) * 2011-06-23 2011-11-23 上海太阳能电池研究与发展中心 CdZnTe (cadmium zinc telluride) thin film solar cell with gradient band gap structure
CN102893408A (en) * 2010-05-13 2013-01-23 第一太阳能有限公司 Photovotaic device conducting layer
US20140000690A1 (en) * 2011-03-15 2014-01-02 Victor V. Plotnikov Intrinsically Semitransparent Solar Cell and Method of Making Same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101276854A (en) * 2008-05-09 2008-10-01 上海太阳能电池研究与发展中心 Tellurium zincium vestalium thin-film solar cell
CN102893408A (en) * 2010-05-13 2013-01-23 第一太阳能有限公司 Photovotaic device conducting layer
US20140000690A1 (en) * 2011-03-15 2014-01-02 Victor V. Plotnikov Intrinsically Semitransparent Solar Cell and Method of Making Same
CN102254966A (en) * 2011-06-23 2011-11-23 上海太阳能电池研究与发展中心 CdZnTe (cadmium zinc telluride) thin film solar cell with gradient band gap structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105789455A (en) * 2016-03-24 2016-07-20 浙江零维光伏科技有限公司 Element doping method for organic thin film solar cell
CN109545881A (en) * 2018-10-29 2019-03-29 四川大学 A kind of CdS/CdTe solar cell of based single crystal silicon chip substrate
CN110544729A (en) * 2019-08-09 2019-12-06 中山瑞科新能源有限公司 CdTe double-sided solar cell and preparation method thereof

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