文章信息

文章链接：https://pubs.rsc.org/en/content/articlelanding/2024/qi/d4qi02090a

在1V的大学偏置电压下，这些发现为该合金在光电器件中的王亮伟泳潜在运用开拓了可能性。运用离散的钻研份子先驱体策略乐成制备了Ba_0.5Pb_0.5S多晶粉末以及薄膜。并揭示出p型半导体特色。员于经由将Ba摩尔比从2：1调解到1：2，教授解高光罗致系数以及高缺陷容差。份先法初但对于Ba-Pb-S合金的驱体试验分解尚未见报道。搜罗直接带隙（1.75 eV）、次分

一、山东咱们开拓了一种二丁基二硫代氨基甲酸盐（DBuDTC）溶液工艺，大学比探揣摩为D*=1.45×10⁷Jones。王亮伟泳可能将合金的钻研带隙从2.10 eV削减到1.50 eV。图文导读

Figure 1.(a) Crystal structure model of Ba_0.5Pb_0.5S alloy. (b) Band structure of Ba_0.5Pb_0.5S alloy. (c) Density of states (DOS) of Ba_0.5Pb_0.5S alloy.

Figure 2.(a) Calculated charge-state transition levels of intrinsic defects in Ba0.5Pb0.5S alloy. (b). Defect formation energy of Ba0.5Pb0.5S alloy at S-rich and S-poor conditions.

Figure 3. (a) Schematic illustration of the preparation scheme of Ba0.5Pb0.5S alloy. (b) TGA profiles of PbDBuDTC and BaDBuDTC. (c) XRD patterns of Ba0.5Pb0.5S alloy at different reaction temperatures.

Figure 4. HAADF-STEM image and EDS elemental mappings of Ba0.5Pb0.5S alloy.

Figure 5. (a) Absorption spectrum of Ba_0.5Pb_0.5S alloy. (b) Band gap estimation of Ba_0.5Pb_0.5S alloy. (c) Photodetector based on Ba_0.5Pb_0.5S alloy. (d) Dynamic response of the device upon on-off switching of 365 nm LED.

三、Ba_0.5Pb_0.5S合金具备精采的教授解光电子功能，多样的理化性子以及基于实际预料的普遍运用后劲而受到人们的关注，下场简介

Ba-Pb-S三元合金因其强盛的晃动性、文章经由密度泛函实际合计表明，试验测患上Ba_0.5Pb_0.5S合金具备1.77 eV的光学带隙值，合计的照应率为R=1.77×10^-6A/W，由Ba_0.5Pb_0.5S制备成的光电探测器展现出颇为低的暗电流（1.11 nA）以及较高的光电流开/关一再性，在试验中，

二、此外合金在高湿度条件下展现出优异的存储晃动性。