Misra Ravi K, Cohen Bat-El, Iagher Lior, Etgar Lioz
Institute of Chemistry, Casali Center for Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem, Israel.
ChemSusChem. 2017 Oct 9;10(19):3712-3721. doi: 10.1002/cssc.201701026. Epub 2017 Aug 28.
Three-dimensional (3 D) perovskite has attracted a lot of attention owing to its success in photovoltaic (PV) solar cells. However, one of its major crucial issues lies in its stability, which has limited its commercialization. An important property of organic-inorganic perovskite is the possibility of forming a layered material by using long organic cations that do not fit into the octahedral cage. These long organic cations act as a "barrier" that "caps" 3 D perovskite to form the layered material. Controlling the number of perovskite layers could provide a confined structure with chemical and physical properties that are different from those of 3 D perovskite. This opens up a whole new batch of interesting materials with huge potential for optoelectronic applications. This Minireview presents the synthesis, properties, and structural orientation of low-dimensional perovskite. It also discusses the progress of low-dimensional perovskite in PV solar cells, which, to date, have performance comparable to that of 3 D perovskite but with enhanced stability. Finally, the use of low-dimensional perovskite in light-emitting diodes (LEDs) and photodetectors is discussed. The low-dimensional perovskites are promising candidates for LED devices, mainly because of their high radiative recombination as a result of the confined low-dimensional quantum well.
三维（3D）钙钛矿因其在光伏（PV）太阳能电池方面的成功而备受关注。然而，其主要关键问题之一在于稳定性，这限制了其商业化进程。有机-无机钙钛矿的一个重要特性是利用不适合八面体笼的长有机阳离子形成层状材料的可能性。这些长有机阳离子充当“屏障”，“覆盖”3D钙钛矿以形成层状材料。控制钙钛矿层的数量可以提供一种具有与3D钙钛矿不同的化学和物理性质的受限结构。这开辟了一批全新的具有巨大光电应用潜力的有趣材料。本综述介绍了低维钙钛矿的合成、性质和结构取向。还讨论了低维钙钛矿在光伏太阳能电池中的进展，迄今为止，其性能与3D钙钛矿相当，但稳定性有所提高。最后，讨论了低维钙钛矿在发光二极管（LED）和光电探测器中的应用。低维钙钛矿是LED器件的有前途的候选材料，主要是因为它们由于受限的低维量子阱而具有高辐射复合率。
