A kind of cs for perovskite solar cell 3 bixin 2 -xi 9 Preparation method of photoactive layer
A cs3bixin2-xi9, solar cell technology, applied in the field of nanomaterials and solar cells, can solve the problems of restricting the large-scale production and commercialization of perovskite cells, unstable battery device performance, human health hazards, etc., and achieve excellent photoelectric performance. , low cost, environment-friendly effect
Inactive Publication Date: 2020-06-05
CHINA UNIV OF MINING & TECH
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Problems solved by technology
At the same time, the performance of the battery devices prepared by it is unstable, which restricts the large-scale production and commercialization of perovskite batteries.
In addition, the existence of Pb element will pollute the environment and cause harm to human health.
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Embodiment 1
[0044] Embodiment 1: mesoporous structure perovskite solar cell.
[0045] The mesoporous structure Cs of the present embodiment 3 Bi x In 2-x I 9 The specific steps of the preparation method of the perovskite solar cell are as follows:
[0046] (1) Dense layer preparation: take a piece of conductive glass (FTO), and use a glass knife to cut glass pieces of required size. Put the conductive glass into deionized water, 95% absolute ethanol, isopropanol, and 99% absolute ethanol in order to ultrasonically clean it for 30 minutes, and dry it with nitrogen. Mix absolute ethanol and titanium diisopropoxybisacetylacetonate to form a dense layer solution and magnetically stir for 20 to 30 minutes, spray a layer of titanium dioxide film on the conductive surface by spray pyrolysis, and then put it in a muffle furnace for annealing at 500°C for 1 hour Titanium dioxide that forms the anatase phase.
[0047] (2) Preparation of mesoporous layer: Mix 18NRT and absolute ethanol (1:3.5)...
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Abstract
Cs for perovskite solar cells 3 Bi x In 2‑x I 9 The invention discloses a method for preparing a photoactive layer, belonging to the technical field of nanometer materials and solar cells. Cs 3 Bi x In 2‑x I 9 Photoactive layer preparation method: Cs 3 Bi x In 2‑x I 9 The photoactive layer was prepared by a one-step solution spin coating method, CsI, BiI 3 and InI 3 The powder is dispersed in a DMF / DMSO mixed solution to form a precursor solution, which is spin-coated on a glass substrate, and then heated and annealed to form a perovskite film; 3 Bi x In 2‑x I 9 For the preparation of perovskite layer solar cells: configure hole transport layer solution (70㎎spiro-MeoTAD, 17μl lithium salt, 28μl 4-tert-butylpyridine, 1ml chlorobenzene), and spin-coat the configured solution on Cs 3 Bi x In 2‑x I 9 On the surface of perovskite, after standing for 12 hours, put the sample in an evaporated silver vacuum coating apparatus, and evaporate a layer of 60nm silver electrode; after the evaporation is completed, wipe off the photoanode with butyrolactone to obtain perovskite mine solar cells. Advantages: the perovskite solar cell of the present invention has extremely strong stability, low cost, simple preparation process, environmental friendliness, and can be mass-produced.
Description
technical field [0001] The invention relates to the technical field of nanomaterials and solar cells, in particular to a Cs for perovskite solar cells 3 BixIn 2-x I 9 Preparation method of photoactive layer. Background technique [0002] Solar energy is the fundamental source of all energy (renewable energy and non-renewable energy) on the earth. It is inexhaustible and inexhaustible. It is in a leading position in the field of new energy. A solar cell is a device that uses the photovoltaic effect to directly convert light energy into electrical energy. Among them, silicon solar cells are the most mature in the development of photovoltaic cells, but the purification process of silicon raw materials requires a lot of energy consumption, which makes the cost of silicon solar cells remain high. [0003] In recent years, new perovskite solar cells have emerged, and the efficiency of the cells has also soared, from 3.8% in 2009 to 22.1% in 2017. Perovskite cells have the cha...
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IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/10H10K30/00Y02E10/549
Inventor 朱磊刘松宇宋健赵宇龙王进峰顾秀全邢政王鹏顾永琴强颖怀
Owner CHINA UNIV OF MINING & TECH