Agarwal Shubhanshu, Rodriguez Perilla Sofia, Rios Marques Matheus, Hayes Daniel C, Vincent Kiruba Catherine, Agrawal Rakesh
Davidson School of Chemical Engineering, Purdue University West Lafayette IN 47907 USA
Chemical and Environmental Engineering, Universidad Nacional de Colombia Bogota D.C. Colombia.
Nanoscale Adv. 2025 Sep 16. doi: 10.1039/d5na00628g.
Chalcogenide perovskites have increasingly garnered attention in recent years for various optoelectronic applications. While distorted perovskites such as BaZrS are primarily being explored for photovoltaic applications, hexagonal ABS compounds such as BaTiS have been proposed for optical devices and thermoelectrics due to their intriguing properties arising from their quasi-1D structure, which imparts anisotropy in properties. However, other members of the hexagonal family remain largely unexplored, likely due to their harsh synthesis conditions. In this report, we synthesize nanocrystals of relatively unexplored members of the hexagonal ABX chalcogenides family, which also possess a similar rod-like morphology and could be useful for polarized photodetection applications. Specifically, we modified our previously reported sulfide perovskite nanoparticle synthesis route to produce BaNbS and BaTaS nanocrystals. Furthermore, we explored selenium and selenourea as precursors to synthesize selenide hexagonal nanocrystals such as BaTiSe and BaZrSe, as well as other selenide analogues like BaNbSe and BaTaSe. This marks the first report of nanocrystal synthesis for the BaMSe family, where M is an early transition metal.
近年来，硫属钙钛矿因其在各种光电器件中的应用而越来越受到关注。虽然像BaZrS这样的畸变钙钛矿主要用于光伏应用，但像BaTiS这样的六方ABS化合物由于其准一维结构所产生的有趣性质而被提议用于光学器件和热电学，这种结构赋予了其各向异性的性质。然而，六方族的其他成员在很大程度上仍未被探索，这可能是由于它们苛刻的合成条件。在本报告中，我们合成了六方ABX硫属化物家族中相对未被探索的成员的纳米晶体，它们也具有类似的棒状形态，可用于偏振光探测应用。具体来说，我们修改了我们之前报道的硫化物钙钛矿纳米颗粒合成路线，以制备BaNbS和BaTaS纳米晶体。此外，我们探索了以硒和硒脲作为前驱体来合成硒化物六方纳米晶体，如BaTiSe和BaZrSe，以及其他硒化物类似物，如BaNbSe和BaTaSe。这是关于BaMSe家族纳米晶体合成的首次报道，其中M是一种早期过渡金属。
