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Preparation method of heterojunction light absorption layer perovskite solar cell

A technology of solar cells and light absorbing layers, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems that affect the extraction and transmission of electrons and holes, and affect the efficiency of solar cells

Inactive Publication Date: 2021-04-20
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of the usual perovskite solar cell device is mainly electrode / electron transport layer / light absorption layer / hole transport layer / electrode, and the interface between electron transport layer / light absorption layer and light absorption layer / hole transport layer exists. Strong interface effect, which affects the extraction and transport of electrons and holes, which in turn affects the efficiency of solar cells

Method used

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  • Preparation method of heterojunction light absorption layer perovskite solar cell
  • Preparation method of heterojunction light absorption layer perovskite solar cell
  • Preparation method of heterojunction light absorption layer perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step S100: Prepare n-type semiconductor material TiO 2 Doped Perovskite Solar Cell Light Absorbing Layer Precursor

[0037]Step S101: anatase phase TiO 2 The nanoparticles were dispersed in 1mL of a mixed solvent of chloroform and absolute ethanol, the volume ratio of chloroform and absolute ethanol was 1:1, and the concentration of 5wt% nano-TiO 2 Precursor;

[0038] Step S102: set CH 3 NH 3 I and PbI 2 Mix according to the molar ratio of 1:1 to obtain mixed powder, mix and dissolve in the mixed solvent of DMF and DMSO, the volume ratio of DMF and DMSO in the mixed solvent is 4:1, and then stir with a magnetic stirrer at 60°C for 10h to obtain clarification The concentration of the perovskite light absorbing layer precursor is 1.5mol / mL;

[0039] Step S103: the TiO obtained through step S101 2 The precursor solution and the perovskite light-absorbing layer precursor solution prepared in step S102 are mixed according to the volume ratio of 5:100, stirred at 60° C...

Embodiment 2

[0059] Step S100: Prepare n-type semiconductor material TiO 2 Doped Perovskite Solar Cell Light Absorbing Layer Precursor

[0060] Step S101: anatase phase TiO 2 The nanoparticles were dispersed in 1mL of a mixed solvent of chloroform and absolute ethanol, the volume ratio of chloroform and absolute ethanol was 1:1, and the concentration of 5wt% nano-TiO 2 Precursor;

[0061] Step S102: set CH 3 NH 3 I and PbI 2 Mix according to the molar ratio of 1:1 to obtain mixed powder, mix and dissolve in the mixed solvent of DMF and DMSO, the volume ratio of DMF and DMSO in the mixed solvent is 4:1, and then stir with a magnetic stirrer at 60°C for 10h to obtain clarification The concentration of the perovskite light absorbing layer precursor is 1.8mol / mL;

[0062] Step S103: the TiO obtained in step S101 will be 2 Mix the precursor solution with the perovskite light-absorbing layer precursor solution prepared in step S102 at a volume ratio of 10:100, continue to stir at 60°C for...

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Abstract

The invention discloses a preparation method of a heterojunction light absorption layer perovskite solar cell. The method comprises the steps of respectively employing an electron transmission layer material and a hole transmission layer material to carry out the doping of a light absorption layer in the perovskite solar cell, and preparing an n-type doped and P-type doped heterojunction perovskite solar cell light absorption layer. The method mainly comprises the following steps: preparing the n-type perovskite light absorption layer; preparing the p-type perovskite light absorption layer; and preparing the heterojunction perovskite solar cell light absorption layer. An n-type semiconductor material TiO2 is introduced into the part,in contact with the electron transmission layer, of the light absorption layer for doping, so that rapid extraction of electrons in the light absorption layer is realized; a p-type organic semiconductor material Spiro-OMeTAD is introduced into the light absorption layer at the part in contact with the hole transport layer for doping, so that rapid extraction of photo-generated holes is realized. By using the method, the performance of the perovskite solar cell is further improved.

Description

technical field [0001] The invention relates to the technical field of preparation of solar cell devices, in particular to a preparation method of a perovskite solar cell with a heterojunction light absorption layer. Background technique [0002] Perovskite solar cells are a new type of solar cells that use organic-inorganic hybrid perovskite structure materials as light-absorbing layers. Perovskite light-absorbing layers have the advantages of high carrier mobility, long diffusion length, large absorption coefficient, and high defect tolerance. The structure of the usual perovskite solar cell device is mainly electrode / electron transport layer / light absorption layer / hole transport layer / electrode, and the interface between electron transport layer / light absorption layer and light absorption layer / hole transport layer exists. The strong interface effect affects the extraction and transport of electrons and holes, which in turn affects the efficiency of solar cells. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCY02E10/549
Inventor 张喜林李鉴华刘宇瑄张艺刘志勇
Owner HENAN NORMAL UNIV