WO2025208827 - PREPARATION METHOD FOR PEROVSKITE THIN FILM, AND TANDEM SOLAR CELL
National phase entry is expected:
Publication Number
WO/2025/208827
Publication Date
09.10.2025
International Application No.
PCT/CN2024/123870
International Filing Date
10.10.2024
Title **
[English]
PREPARATION METHOD FOR PEROVSKITE THIN FILM, AND TANDEM SOLAR CELL
[French]
PROCÉDÉ DE PRÉPARATION D'UN FILM MINCE DE PÉROVSKITE, ET CELLULE SOLAIRE EN TANDEM
[Chinese]
一种钙钛矿薄膜制备方法及叠层太阳能电池
Applicants **
SHENZHEN HIKING PV TECHNOLOGY CO. LTD.
Inventors
DUAN, Leiping
ZHANG, Yu
YI, Haimang
XU, Cheng
Priority Data
202410399917.7
03.04.2024
CN
Application details
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International Searching Authority |
CNIPA
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1570 | |
| EPO | Filing, Examination, Granting | 11616 | |
| Japan | Filing, Examination, Granting | 2017 | |
| South Korea | Filing, Examination, Granting | 1780 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
21,723
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Abstract[English]
The present application provides a preparation method for a perovskite thin film. An etching step is introduced in a conventional two-step method; in the first step, in the process of co-evaporating to form a lead iodide thin film, an organic additive is introduced; and in the second step, the organic additive in the lead iodide thin film is extracted using a dissolving solution, so that the lead iodide thin film of a porous structure is obtained, increasing the contact between the lead iodide thin film and an ammonium salt solution in the third step during spin-coating with the ammonium salt solution, thereby improving the adequacy of reaction; and a high-quality and low-defect density conformal perovskite thick film is formed on a textured substrate, thereby improving the performance of tandem solar cell devices obtained using the method.[French]
La présente invention concerne un procédé de préparation d'un film mince de pérovskite. Une étape de gravure est introduite dans un procédé en deux étapes classique ; dans la première étape, dans le processus de co-évaporation pour former un film mince d'iodure de plomb, un additif organique est introduit ; et dans la deuxième étape, l'additif organique dans le film mince d'iodure de plomb est extrait à l'aide d'une solution de dissolution, de telle sorte que le film mince d'iodure de plomb d'une structure poreuse est obtenu, augmentant le contact entre le film mince d'iodure de plomb et une solution de sel d'ammonium dans la troisième étape pendant le revêtement par centrifugation avec la solution de sel d'ammonium, ce qui permet d'améliorer l'adéquation de la réaction ; et un film épais de pérovskite conforme de haute qualité et de faible densité de défauts est formé sur un substrat texturé, ce qui permet d'améliorer les performances de dispositifs de cellules solaires en tandem obtenus à l'aide du procédé.[Chinese]
本申请提供的一种钙钛矿薄膜制备方法，在传统的两步法中引入了刻蚀的步骤，在第一步共蒸碘化铅薄膜的过程中引入有机添加剂，并在第二步采用溶解溶液对碘化铅薄膜中的有机添加剂进行吸取，从而得到多孔结构的碘化铅薄膜，增加第三步铵盐溶液旋涂时与铵盐溶液的接触，从而提高反应的充分性，促进绒面基底上形成更高质量缺陷密度更低的保形钙钛矿厚膜，提升了采用该方法得到的叠层太阳能电池器件的性能。