当前位置：
X-MOL 学术
›
Inorg. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
High-Quality TiO2 Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI3 Perovskite Solar Cells
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-03-14 , DOI: 10.1021/acs.inorgchem.4c00178 Zhuo Dong 1 , Jiaduo Wang 1 , Jiao Men 1 , Junwei Zhang 1 , Jinpeng Wu 2 , Yuan Lin 2 , Xiaoying Xie 1 , Jiajun Wang 1 , Jingbo Zhang 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-03-14 , DOI: 10.1021/acs.inorgchem.4c00178 Zhuo Dong 1 , Jiaduo Wang 1 , Jiao Men 1 , Junwei Zhang 1 , Jinpeng Wu 2 , Yuan Lin 2 , Xiaoying Xie 1 , Jiajun Wang 1 , Jingbo Zhang 1
Affiliation
|
The electron transport layer (ETL) plays an important role in determining the conversion efficiency and stability of perovskite solar cells (PSCs). Here, TiO2 thin film was prepared by irradiating diisopropoxy diacetylacetone titanium precursor thin film with 172 nm vacuum ultraviolet (VUV) at a low temperature. The prepared TiO2 thin film has higher electron mobility and conductivity. As it is used as an ETL for MAPbI3 PSCs, its band structure is better matched with the perovskite, and at the same time, due to the good interface contact, more uniform perovskite crystals are formed. Most importantly, a large number of hydroxyl radicals were formed during VUV irradiation of the precursor film, which made up for the oxygen defect present on the surface of the TiO2 thin film, and were adsorbed to the film surface. These hydroxyl groups form hydrogen bonds with methylammonium (MA) components on the MAPbI3 buried surface, thus promoting the transfer of photogenerated electrons at the MAPbI3/ETL interface. The power conversion efficiency of PSCs fabricated in air with the ETL prepared by VUV irradiation is 20.46%, which is higher than that of the contrast solar cell based on the sintered ETL (17.96%).
中文翻译：
通过真空紫外照明制备用于 MAPbI3 钙钛矿太阳能电池的高质量 TiO2 电子传输薄膜
电子传输层（ETL）在决定钙钛矿太阳能电池（PSC）的转换效率和稳定性方面起着重要作用。这里，通过在低温下用172nm真空紫外线(VUV)照射二异丙氧基二乙酰丙酮钛前体薄膜来制备TiO 2薄膜。所制备的TiO 2薄膜具有较高的电子迁移率和电导率。由于其用作MAPbI 3 PSC的ETL，其能带结构与钙钛矿匹配得更好，同时由于良好的界面接触，形成了更均匀的钙钛矿晶体。最重要的是，前驱体薄膜在VUV照射过程中形成大量羟基自由基，弥补了TiO 2薄膜表面存在的氧缺陷，并被吸附到薄膜表面。这些羟基与MAPbI 3掩埋表面上的甲基铵(MA)成分形成氢键，从而促进光生电子在MAPbI 3 /ETL界面处的转移。使用VUV照射制备的ETL在空气中制造的PSC的功率转换效率为20.46%，高于基于烧结ETL的对比太阳能电池的功率转换效率（17.96%）。
更新日期：2024-03-14
中文翻译：
通过真空紫外照明制备用于 MAPbI3 钙钛矿太阳能电池的高质量 TiO2 电子传输薄膜
电子传输层（ETL）在决定钙钛矿太阳能电池（PSC）的转换效率和稳定性方面起着重要作用。这里，通过在低温下用172nm真空紫外线(VUV)照射二异丙氧基二乙酰丙酮钛前体薄膜来制备TiO 2薄膜。所制备的TiO 2薄膜具有较高的电子迁移率和电导率。由于其用作MAPbI 3 PSC的ETL，其能带结构与钙钛矿匹配得更好，同时由于良好的界面接触，形成了更均匀的钙钛矿晶体。最重要的是，前驱体薄膜在VUV照射过程中形成大量羟基自由基，弥补了TiO 2薄膜表面存在的氧缺陷，并被吸附到薄膜表面。这些羟基与MAPbI 3掩埋表面上的甲基铵(MA)成分形成氢键，从而促进光生电子在MAPbI 3 /ETL界面处的转移。使用VUV照射制备的ETL在空气中制造的PSC的功率转换效率为20.46%，高于基于烧结ETL的对比太阳能电池的功率转换效率（17.96%）。
京公网安备 11010802027423号