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Semitransparent perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of high production cost, complex process, and low sunlight capture efficiency, and achieve the effects of improved stability, simple preparation process, and good uniformity

Active Publication Date: 2016-05-18
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide a semi-transparent perovskite solar cell, aiming to solve the problem of insufficient stability of the perovskite solar cell, high manufacturing cost, complex process, traditional organic electron transport layer or space The hole transport layer is prepared by spin coating, the material itself is expensive and the utilization rate of raw materials is extremely low, and most perovskite cells have low capture efficiency of sunlight, etc.

Method used

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  • Semitransparent perovskite solar cell and preparation method thereof
  • Semitransparent perovskite solar cell and preparation method thereof
  • Semitransparent perovskite solar cell and preparation method thereof

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preparation example Construction

[0057] The first embodiment of the present invention provides a method for preparing a translucent perovskite solar cell, the specific steps of which are as follows:

[0058] a And substrate b or PET (PI) flexible transparent conductive film substrate a and substrate b.

[0059] (2) Spin-coat or scrape-coat TiO on the clean substrate a surface of step (1) 2 The precursor solution is annealed in a glove box at 80-120°C for 20-50 minutes, and prepared at low temperature, which has the advantage of being flexible and can be prepared in a large area.

[0060] Or heat the clean FTO transparent conductive glass substrate a at 400-600°C, spray the pre-prepared isopropyl titanate solution on the substrate, heat for 20-60 minutes, and finally obtain a surface coating with a thickness of 20-150nm TiO 2 The substrate a of the electron transport thin film is prepared by high temperature, which has the advantage of being simple and making the required conditions easier to achieve.

[0...

Embodiment

[0091] Example Table 1

[0092]

[0093] Ditto, such as image 3 The specific preparation steps shown are as follows:

[0094] Step (1) Substrate preparation: The FTO transparent conductive glass is ultrasonically cleaned with deionized water, ethanol and acetone in sequence, and then treated with ultraviolet and ozone for 20 minutes, and set aside.

[0095] Step (2) TiO 2 Preparation of the electron transport layer: pre-prepared isopropyl titanate ethanol solution at a ratio of 1:50, preheated the clean FTO transparent conductive glass substrate obtained in step (1) at 500°C, and then prepared the pre-prepared The ethanol solution of isopropyl titanate was sprayed on the substrate, and heated for 40 minutes to finally achieve the deposition of dense TiO with a thickness of 90nm. 2 Electron transport layer, cooled for later use.

[0096] Step (3) Preparation of NiO hole transport layer: Pre-prepared nickel acetylacetonate acetonitrile solution at a ratio of 1:50, prehea...

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Abstract

The invention discloses a semitransparent perovskite solar cell and a preparation method thereof. The semitransparent perovskite solar cell comprises a transparent conductive substrate a, an inorganic electron transport layer, a light capturing layer, an inorganic hole transport layer and a transparent conductive substrate b, wherein the light capturing layer is made of a DXZ3 type perovskite material; D is selected from Cs<+>, CH3NH3<+>, CH(NH2)2<+>, or a mixture thereof; X is selected from Pb<2+>, Sn<2+>, Ge<2+> or a mixture thereof; and Z is selected from Cl<->, Br<->, I<-> or a mixture thereof. According to the perovskite solar cell with the electron transport layer and the hole transport layer which are made of a full inorganic material, defects of high cost and stability reduction in organic materials are eliminated, and battery stability is greatly improved. Furthermore, the perovskite solar cell is prepared through a physical extrusion method, thereby realizing simple preparation process and high uniformity of the perovskite film. The perovskite solar cell further has advantages of low cost, excellent and stable performance. Furthermore commercial application of the perovskite solar cell is promoted.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and more specifically relates to a semitransparent perovskite solar cell and a preparation method thereof. Background technique [0002] Human beings are facing the crisis brought by the depletion of fossil energy, and it is imminent to develop new energy. As a new type of renewable and clean energy, solar energy has unique advantages and great potential for development. At present, the large-scale development and utilization of solar energy is mainly concentrated in the direction of photoelectric conversion. Relatively mature photovoltaic technologies include silicon-based solar cells, multi-component compound thin-film solar cells represented by CIGS, CdTe, etc., but the above two photovoltaic technologies exist more or less Problems such as high cost, high energy consumption, complex process, limited raw materials and environmental pollution. [0003] Therefore, in order to make up for t...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48H01L51/46
CPCH10K85/00H10K30/00H10K2102/00Y02E10/549Y02P70/50
Inventor 陈炜徐敬超徐尧
Owner HUAZHONG UNIV OF SCI & TECH
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