Interfacial alloying between lead halide perovskite crystals and hybrid glasses.
Interfacial alloying between lead halide perovskite crystals and hybrid glasses.
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DOI：
10.1038/s41467-023-43247-6
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发表时间：
2023-11-22
影响因子：
16.6
通讯作者：
Hou, Jingwei
中科院分区：
文献类型：
--
作者：
Li, Xuemei;Huang, Wengang;Krajnc, Andraz;Yang, Yuwei;Shukla, Atul;Lee, Jaeho;Ghasemi, Mehri;Martens, Isaac;Chan, Bun;Appadoo, Dominique;Chen, Peng;Wen, Xiaoming;Steele, Julian A.;Hackbarth, Haira G.;Sun, Qiang;Mali, Gregor;Lin, Rijia;Bedford, Nicholas M.;Chen, Vicki;Cheetham, Anthony K.;Tizei, Luiz H. G.;Collins, Sean M.;Wang, Lianzhou;Hou, Jingwei
金属卤化物钙钛矿的出色光电特性为下一代光学器件提供了巨大的前景，具有出色的转换效率和更低的制造成本。然而，关于钙钛矿表面/界面（例如结构、电荷转移或脱靶复合源）还是整体特性是否是器件性能的决定性因素，长期以来一直存在模糊性。在这里，我们通过烧结制造了一系列 CsPbI3 晶体和混合玻璃复合材料，并全面可视化了性能景观。我们的研究结果表明，界面是 CsPbI3 晶相、光电质量和稳定性的主要决定因素。特别是，发现扩散“合金”层的存在对于钝化表面陷阱并有益地改变晶相的能量景观至关重要。然而，尽管合金层内保留了卤化物的短程结构，但高温烧结会导致非化学计量钙钛矿的形成和界面处的过量陷阱。通过揭示功能异质界面，我们的研究为设计高性能钙钛矿器件提供了关键因素。 MOF 玻璃纳米复合材料使研究人员能够研究卤化铅钙钛矿的体相和界面区域与其光电特性的关系。在这里，作者为稳定高效的钙钛矿光电器件设计的进步提供了见解。
The stellar optoelectronic properties of metal halide perovskites provide enormous promise for next-generation optical devices with excellent conversion efficiencies and lower manufacturing costs. However, there is a long-standing ambiguity as to whether the perovskite surface/interface (e.g. structure, charge transfer or source of off-target recombination) or bulk properties are the more determining factor in device performance. Here we fabricate an array of CsPbI3 crystal and hybrid glass composites by sintering and globally visualise the property-performance landscape. Our findings reveal that the interface is the primary determinant of the crystal phases, optoelectronic quality, and stability of CsPbI3. In particular, the presence of a diffusion “alloying” layer is discovered to be critical for passivating surface traps, and beneficially altering the energy landscape of crystal phases. However, high-temperature sintering results in the promotion of a non-stoichiometric perovskite and excess traps at the interface, despite the short-range structure of halide is retained within the alloying layer. By shedding light on functional hetero-interfaces, our research offers the key factors for engineering high-performance perovskite devices. MOF glass nanocomposites allow researchers to study lead halide perovskites’ bulk and interfacial regions in relation to their optoelectronic properties. Here authors provide insights for the advancement of stable and efficient perovskite optoelectronic devices design.
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影响因子：
15
作者：
Hou, Jingwei;Rios Gomez, Maria Laura;Bennett, Thomas D.
通讯作者：
Bennett, Thomas D.
影响因子：
27.8
作者：
Conings, Bert;Drijkoningen, Jeroen;Boyen, Hans-Gerd
通讯作者：
Boyen, Hans-Gerd
影响因子：
16.6
作者：
Han, Tae-Hee;Lee, Jin-Wook;Yang, Yang
通讯作者：
Yang, Yang
影响因子：
5.9
作者：
Gandara-Loe, Jesus;Bueno-Perez, Rocio;Silvestre-Albero, Joaquin
通讯作者：
Silvestre-Albero, Joaquin
影响因子：
3.2
作者：
Falsini, Naomi;Roini, Giammarco;Vinattieri, Anna
通讯作者：
Vinattieri, Anna