Solvent-Free Method for Defect Reduction and Improved Performance of p-i-n Vapor-Deposited Perovskite Solar Cells.
Solvent-Free Method for Defect Reduction and Improved Performance of p-i-n Vapor-Deposited Perovskite Solar Cells.
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DOI：
10.1021/acsenergylett.2c00865
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发表时间：
2022-06-10
影响因子：
22
通讯作者：
Johnston, Michael B.
中科院分区：
文献类型：
--
作者：
Lohmann, Kilian B.;Motti, Silvia G.;Oliver, Robert D. J.;Ramadan, Alexandra J.;Sansom, Harry C.;Yuan, Qimu;Elmestekawy, Karim A.;Patel, Jay B.;Ball, James M.;Herz, Laura M.;Snaith, Henry J.;Johnston, Michael B.
随着钙钛矿光伏发电接近商业化，开发工业规模的缺陷钝化技术势在必行。气相沉积是一种在工业中广泛应用的无溶剂制造技术，可用于制造金属卤化物钙钛矿薄膜。我们证明，通过部分替代 PbCl2 作为无机前体，气相沉积 [CH(NH2)2]0.83Cs0.17PbI3 钙钛矿太阳能电池的生长和光电性能显着改善。我们发现用 PbI2 部分替代 PbCl2 可将光致发光寿命从 5.6 ns 提高到 100 ns 以上，光致发光量子产率提高一个数量级以上，载流子迁移率从 46 cm2/(V s) 提高到 56 cm2/(V s)。这使得采用钙钛矿薄膜（用 20% 的 PbI2 替代 PbCl2）的器件的太阳能电池功率转换效率从 16.4% 提高到 19.3%。我们的方法提出了一种可扩展、干燥且无溶剂的途径来减少非辐射复合中心，从而提高气相沉积金属卤化物钙钛矿太阳能电池的性能。
As perovskite-based photovoltaics near commercialization, it is imperative to develop industrial-scale defect-passivation techniques. Vapor deposition is a solvent-free fabrication technique that is widely implemented in industry and can be used to fabricate metal-halide perovskite thin films. We demonstrate markably improved growth and optoelectronic properties for vapor-deposited [CH(NH2)2]0.83Cs0.17PbI3 perovskite solar cells by partially substituting PbI2 for PbCl2 as the inorganic precursor. We find the partial substitution of PbI2 for PbCl2 enhances photoluminescence lifetimes from 5.6 ns to over 100 ns, photoluminescence quantum yields by more than an order of magnitude, and charge-carrier mobility from 46 cm2/(V s) to 56 cm2/(V s). This results in improved solar-cell power conversion efficiency, from 16.4% to 19.3% for the devices employing perovskite films deposited with 20% substitution of PbI2 for PbCl2. Our method presents a scalable, dry, and solvent-free route to reducing nonradiative recombination centers and hence improving the performance of vapor-deposited metal-halide perovskite solar cells.
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影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
Snaith, Henry J.
影响因子：
22
作者：
Gil-Escrig L;Dreessen C;Palazon F;Hawash Z;Moons E;Albrecht S;Sessolo M;Bolink HJ
通讯作者：
Bolink HJ
影响因子：
16.6
作者：
Chen, Qi;Zhou, Huanping;Fang, Yihao;Stieg, Adam Z.;Song, Tze-Bin;Wang, Hsin-Hua;Xu, Xiaobao;Liu, Yongsheng;Lu, Shirong;You, Jingbi;Sun, Pengyu;Mckay, Jeff;Goorsky, Mark S.;Yang, Yang
通讯作者：
Yang, Yang
影响因子：
15
作者：
Kojima, Akihiro;Teshima, Kenjiro;Miyasaka, Tsutomu
通讯作者：
Miyasaka, Tsutomu
影响因子：
27.8
作者：
Gil-Escrig, Lidon;Momblona, Cristina;Bolink, Henk J.
通讯作者：
Bolink, Henk J.