A kind of perovskite solar cell with phase separation structure and preparation method thereof
A solar cell, perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as adverse effects on battery performance, unfavorable adhesion, complicated operations, etc. Effect
Active Publication Date: 2020-02-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
This method is complicated to operate, high in cost, and impurities are likely to be generated between adjacent layers during the preparation process, which is not conducive to the adhesion of the next layer, and will introduce recombination centers at the same time, which will adversely affect the performance of the battery.
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[0033] A method for preparing a perovskite solar cell with a phase-separated structure, specifically comprising the following steps:
[0034] Step 1. Select FTO glass with a size of 1.95cm*1.95cm as the substrate, wash it with cleaning agent, saturated ethanol solution of KOH, deionized water, acetone, deionized water, ethanol, and deionized water in sequence, and dry it with nitrogen. Then treat 30min under ultraviolet-ozone and stand-by;
[0035] Step 2. Add 35uL 2M HCl into 2.53mL ethanol and mix well to obtain solution A; add 369uL isopropoxytitanium to 2.53mL ethanol and mix uniformly to obtain solution B; Solution A was slowly added dropwise to solution B and continued to stir for 2 hours to obtain clear TiO 2 Precursor C;
[0036] Step 3, drop the TiO obtained in step 2 on the FTO glass treated in step 1 2 Precursor solution C, then rotated at 2000r for 50s, heated on a heating platform at 150°C for 15min, and finally annealed at 500°C for 30min to obtain TiO 2 Electr...
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A perovskite solar cell with a phase separation structure and a preparation method thereof belong to the technical field of solar cell preparation. The perovskite solar cell with a phase-separated structure includes a transparent conductive substrate, an electron transport layer sequentially formed on the transparent conductive substrate, a phase-separated structure of a perovskite light-absorbing layer and a hole transport layer, and a metal electrode. In the present invention, a mixed solution of a perovskite light-absorbing material and a hole-transporting material is added dropwise to the area to be deposited on the electron transport layer, and light absorption is achieved through the difference in the degree of hydrophilicity and hydrophobicity of the two materials under the joint action of the flexible film and the film layer. Layer and hole layer are separated, and then the phase separation structure of perovskite light-absorbing layer and hole-transporting layer is obtained, which is easy to operate and low in cost, effectively avoids the generation of impurities between adjacent layers, and reduces the perovskite light-absorbing layer. The recombination center of the material is conducive to the preparation of large-area perovskite solar cells.
Description
technical field [0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a perovskite solar cell with a phase separation structure and a preparation method thereof. Background technique [0002] Perovskite solar cell is a kind of solar cell with organic-inorganic hybrid perovskite material as light-absorbing layer. Perovskite light-absorbing material has suitable light-absorbing band gap, bipolar carrier transport characteristics, long carrier The carrier diffusion length and other characteristics make it have excellent photoelectric conversion performance, and it is expected to become a new generation of high-efficiency, low-cost, large-area all-solid-state solar cells. [0003] Perovskite solar cells are usually prepared layer by layer by spin coating. The electron transport layer, perovskite light absorbing layer, hole transport layer, etc. are prepared by spin coating and annealing, and finally a metal electrode is evapo...
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IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCY02E10/549Y02P70/50
Inventor 贾春阳夏建兴万中全
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA