Perovskite solar energy cell based on two-dimensional transition metallic carbide or nitride and preparation method of perovskite solar energy cell

A solar cell, transition metal technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of poor stability and low conductivity of FTO transparent electrodes, and achieve the effect of good conductivity and enhanced conductivity

Inactive Publication Date: 2018-08-31
DALIAN UNIV OF TECH
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Problems solved by technology

[0007] Aiming at the problems of poor stability and low conductivity of FTO transparent electrodes in existing perovskite solar cells, the present invention introduces two-dimensional metal carbides or nitrides into perovskite cells to improve the stability of the cells and enhance transparency Conductivity of the battery

Method used

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  • Perovskite solar energy cell based on two-dimensional transition metallic carbide or nitride and preparation method of perovskite solar energy cell
  • Perovskite solar energy cell based on two-dimensional transition metallic carbide or nitride and preparation method of perovskite solar energy cell
  • Perovskite solar energy cell based on two-dimensional transition metallic carbide or nitride and preparation method of perovskite solar energy cell

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Embodiment 1

[0030] An implementation example of using two-dimensional carbide or nitride as the counter electrode of a perovskite solar cell. Take 1g Ti 3 AlC 2The powder was slowly added to 30mL HF (20wt%), stirred and etched for 12h, centrifuged at 3500rpm for 5min, and the precipitate was washed 4-5 times with deionized water until the pH>5, and the obtained two-dimensional carbides or nitrides such as figure 1 As shown, Ti 3 AlC 2 The intermediate connecting layer in the powder has been consumed by the reactants. Stir intercalation in DMSO solution for 3h, Ti 3 C 2 : DMSO=1:50 (mass ratio), then centrifuged at 8000rpm for 5min to remove excess DMSO, washed 4-5 times with deionized water, and the intercalated Ti 3 C 2 Sonicate with water at a mass ratio of 1:50 at a power of 250W for 1h, centrifuge at 3500rpm for 1h, take the upper suspension, filter it with suction, and dry it in vacuum to obtain a few-layer Ti 3 C 2 , the exfoliated two-dimensional carbide or nitride materi...

Embodiment 2

[0033] An implementation example of using two-dimensional carbide or nitride as the hole transport layer material of a perovskite solar cell. Take 5gTi 3 AlC 2 The powder was slowly added to 60mL HF (10wt%), stirred and etched for 20h, centrifuged at 5000rpm for 5min, and the precipitate was washed 4-5 times with deionized water until the pH>5, and the obtained two-dimensional carbide or nitride. Stir intercalation in DMSO solution for 8h, Ti 3 C 2 : DMSO=1:25 (mass ratio), then centrifuged at 8000rpm for 10min to remove excess DMSO, washed 2 times with deionized water, and the intercalated Ti 3 C 2 Sonicate with water at a mass ratio of 1:50 at a power of 250W for 1h, centrifuge at 3500rpm for 1h, take the upper suspension, and dry it in vacuum to obtain a few-layer Ti 3 C 2 , two-dimensional carbide or nitride material after exfoliation.

[0034] The device preparation of perovskite solar cells is as follows: on the surface of the substrate, spin-coat 70 μL of dense ...

Embodiment 3

[0036] An implementation example of using two-dimensional carbide or nitride as the doped hole transport layer of a perovskite solar cell. The preparation process of the two-dimensional carbide or nitride material is shown in Example 2. The device preparation of perovskite solar cells is as follows: on the surface of the substrate, spin-coat 70 μL of dense layer TiO 2 , high temperature sintering. 75 μL of porous layer slurry was dropped on TiO 2 On the dense layer, spin-coat at 3000rpm for 30s, and sinter at high temperature. After cooling down, transfer to the glove box and take 55 μL of filtered PbI 2 The solution was dropped on the porous TiO 2 Spin-coat at 3000rpm for 30s, after standing for 10min, 250μL filtered CH 3 NH 3 A solution of I in isopropanol was dropped on PbI 2 Spin-coat at 5000rpm for 30s, and anneal at 165°C for 27.5min on a hot plate. Take 150 μL Ti 3 C 2 Chlorobenzene solution, it is added to the configured Spiro-MeOTAD chlorobenzene solution (2...

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Abstract

The invention belongs to the technical field of photovoltaic solar energy cell and provides a perovskite solar energy cell based on two-dimensional transition metallic carbide or nitride and a preparation method of the perovskite solar energy cell. The cell mainly comprises a transparency electrode, an electronic transmission layer, a perovskite light absorbing layer, a hole transport layer and acounter electrode. The two-dimensional transition metal carbide or the nitride MXenes can be any layer of the transparency electrode, the hole transport layer and the counter electrode, or replace anytwo layers of the transparency electrode, the hole transport layer and the counter electrode, or be used as doping materials to be doped into materials of the perovskite light absorbing layer, and the hole transport layer, or be used as conductive materials to coat the surface of the transparency electrode, so the conductivity of the transparency electrode is improved. Other materials are the same as materials of a normal perovskite solar energy cell. According to the invention, based on the excellent conductivity property of the two-dimensional transition metallic carbide or nitride, the conductivity of the transparency electrode can be improved, the stability of the perovskite solar energy cell is improved and the efficiency of the cell is improved.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic solar cells, and provides a perovskite solar cell based on two-dimensional transition metal carbides or nitrides and a preparation method thereof. Background technique [0002] In recent years, the depletion of fossil energy and the increasing environmental and energy problems have urgently required the development of clean and sustainable energy. The effective use and conversion of solar energy is developing rapidly, and photovoltaic devices can help us convert these light energies into electrical energy that can be used directly. [0003] Perovskite solar cells (PSCs) are new photovoltaic devices that use organic metal halides as light-absorbing materials. They are named perovskite solar cells because this organic-inorganic composite material has ABX 3 Perovskite crystal form [Angew.Chem.Int.Ed.2015,54,9757.]. [0004] In just over 8 years, the photoelectric conversion efficiency (PCE) of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K30/151H10K30/82H10K2102/00Y02E10/549
Inventor 高立国马廷丽王立坤曹俊媚
Owner DALIAN UNIV OF TECH
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