The low-temperature solution-process growth of c-axis aligned single crystalline ferroelectric SbSI nanorods arrays by nanosphere lithography for photovoltaic and photodetection applications

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-12-22 DOI:10.1016/j.jallcom.2024.178179

Kun Zhang, Xiuhong Huang, Guoliang Peng, Shuai Li, Sundaram Chandrasekaran, Dong Zhong, Yongping Liu, Dayong Fan

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Abstract

In this study, we successfully deposited high-density c-axis oriented SbSI nanorod array thin films via a low-temperature (~60°C) solution process coupled with nanosphere lithography (NSL). The NSL provide templated substrates with nano-sized pits for nucleation, followed by controlled growth of c-axis aligned single crystalline ferroelectric SbSI nanorods with adjusting reaction times: individual nanorods (t = 10 min, length = 2 μm) - dispersed flower-like structures (t = 1 h, length = 4.5 μm) - low-density nanorods (t = 4 h, length = 11 μm) - uniformly sized vertical nanorod arrays (t = 12 h, length = 17 μm). The constructed n-i-p structure solar cell (FTO/TiO₂/SbSI/HTM/graphene) shows ferroelectric photovoltaic (FPV) effect: the pre-poling operation with +2 V induce a 27% enhancement in PCE compared to the virginal state. At low-intensity light irradiance (@520 nm, 3.14 mW/cm²) a maximum PCE of 2.9% is obtained, compared to the PCE=0.8% under AM 1.5 G (100 mW/cm²), show its potential for indoor photovoltaic application. As a photodetector working in photovoltaic mode, the device show the maximum self-powered responsivity of 68.55 mA W^-1(@520 nm, 12.56 mW/cm²) and the corresponding specific detectivity reaches to 2.17*10¹³ Jones.

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利用纳米球光刻技术低温溶液法生长用于光伏和光检测应用的 c 轴对齐单晶铁电体 SbSI 纳米棒阵列

在这项研究中，我们通过低温（约 60°C）溶液工艺和纳米层光刻（NSL）技术，成功沉积了高密度 c 轴取向的 SbSI 纳米棒阵列薄膜。NSL 提供了具有纳米尺寸凹坑的模板基底，用于成核，然后通过调整反应时间控制 c 轴排列的单晶铁电 SbSI 纳米棒的生长：单个纳米棒（t = 10 分钟，长度 = 2 μm）--分散的花状结构（t = 1 小时，长度 = 4.5 μm）--低密度纳米棒（t = 4 小时，长度 = 11 μm）--大小均匀的垂直纳米棒阵列（t = 12 小时，长度 = 17 μm）。所构建的 ni-p 结构太阳能电池（FTO/TiO2/SbSI/HTM/石墨烯）显示出铁电光伏（FPV）效应：与原始状态相比，+2 V 的预极化操作使 PCE 提高了 27%。在低强度光辐照度（520 纳米，3.14 mW/cm2）下，最大 PCE 为 2.9%，而在 AM 1.5 G（100 mW/cm2）下 PCE 为 0.8%，这表明它具有室内光伏应用的潜力。作为光电模式下的光电探测器，该器件的最大自供电响应度为 68.55 mA W-1（@520 nm，12.56 mW/cm2），相应的比检测度达到 2.17*1013 Jones。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.