Planar perovskite photovoltaic cell with metal phthalocyanine compound as electron transfer layer

A technology of electron transport layer and photovoltaic cell, applied in photovoltaic power generation, circuits, electrical components, etc., can solve the problems of difficulty in obtaining high-stability and long-life perovskite photovoltaic cells, unstable chemical properties of PCBM, and high price

Inactive Publication Date: 2017-06-13
晋芳芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although perovskite photovoltaic cells using C60 and PCBM as electron transport layers have achieved high energy conversion efficiency, C60 and PCBM as electron transport layers of perovskite photovoltaic cells are not perfect
This is mainly reflected in: (1) C60 and PCBM are expensive, and the unit price of C60 is about 500 yuan/gram, while the unit price of PCBM has reached several thousand yu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Example 1 A planar perovskite photovoltaic cell using F16CuPc as the electron transport layer, the device structure is ITO / PEDOT:PSS / CH3NH3PbI3 / F16CuPc / Bphen / Ag; the device preparation includes the following steps.

[0024] The first step: substrate cleaning; ITO conductive glass is cleaned with acetone and glass cleaner in sequence, then ultrasonically treated with acetone, deionized water, and isopropanol for 10 minutes, dried with nitrogen, and then irradiated with ultraviolet light for 10 minutes.

[0025] Step 2: Deposition of the hole transport layer; Spin-coat the PEDOT:PSS hole transport layer on the ITO substrate at a low speed of 500 rpm for 5 seconds and a high speed of 4000 rpm for 35 seconds. After coating, anneal at 120°C for 20 minutes. The thickness of the obtained PEDOT:PSS hole transport layer is about 40 nm.

[0026] The third step: deposition of perovskite light-absorbing layer; use the two-step method to prepare the perovskite light-absorbing layer...

example 2

[0031] Example 2 A planar perovskite photovoltaic cell with SubPcPc as the electron transport layer, the device structure is ITO / polyTPD / CH3NH3PbI3-xClx / SubPcPc / BCP / Al; the device preparation includes the following steps.

[0032] The first step is the same as Example 1.

[0033] Same as the second step of Example 1.

[0034] The third step: deposition of perovskite light-absorbing layer; use one-step method to prepare perovskite light-absorbing layer according to the following method:

[0035] (1) Prepare a mixed solution of 250 mg / ml PbCl2 and 365 mg / ml CH3NH3I, and the solvent is DMF; dissolve at 60 degrees Celsius for 12 hours; (2) Spin-coat 250 mg / ml PbCl2 on the polyTPD hole transport layer, DMF mixed solution of 365 mg / ml CH3NH3I, rotating speed 2500 rpm, time 30 seconds; (3) annealing on a heating plate at 60 degrees Celsius for 60 minutes, then annealing on a heating plate at 100 degrees Celsius for 60 minutes, to obtain CH3NH3PbI3-xClx with good crystallization prop...

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Abstract

The invention relates to a planar perovskite photovoltaic cell with a metal phthalocyanine compound as an electron transfer layer and belongs to the field of optoelectronic materials and devices. The cell is composed of a transparent conducting substrate, a hole transfer layer, a perovskite light absorption layer, the electron transfer layer, an electrode modifying layer and a metal electrode. The cell has the advantages that the metal phthalocyanine compound growing through a primary vacuum deposition method serves as the electron transfer layer to replace a traditional electron transfer layer based on a fullerene derivative. The prepared metal phthalocyanine compound has stable chemical properties, has good heat resistance, sun proofing, acid resistance and alkali resistance, and the perovskite light absorption layer can be well protected. The metal phthalocyanine compound is applied to the perovskite photovoltaic cell, the cost of the cell is reduced, and the service life of the cell is prolonged. The perovskite photovoltaic cell with the metal phthalocyanine compound as the electron transfer layer is high in photoelectric conversion efficiency, simple in structure, low in cost and stable in performance.

Description

technical field [0001] The invention relates to a planar perovskite photovoltaic cell using a metal phthalocyanine compound as an electron transport layer, belonging to the field of optoelectronic materials and devices. Background technique [0002] With the rapid development of human society, the world's demand for various energy sources has increased dramatically, and many countries are facing serious energy security issues. Severe energy and environmental crises have prompted human beings to look for new energy sources that can replace traditional fossil fuels. People pin their hopes on the development and utilization of new energy sources including wind energy, nuclear energy, and tidal energy. But these energy sources have their own limitations. For example, wind energy and tidal energy are greatly restricted by natural conditions and regions, while the development of nuclear energy is not only costly, but also the safety issue faced by nuclear energy is a hidden worr...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/311H10K30/00H10K71/00H10K2102/00Y02E10/549
Inventor 晋芳芳
Owner 晋芳芳
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