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Self-Powered and Broadband Photodetectors Based on High-performance Mixed Dimensional Sb2O3/PdTe2/Si Heterojunction for Multiplex Environmental Monitoring
Small ( IF 13.0 ) Pub Date : 2023-12-19 , DOI: 10.1002/smll.202310107 Jingyao Wang 1 , Cuicui Ling 1, 2 , Xin Xue 1 , Hongguang Ji 1 , Chen Rong 1 , Qingzhong Xue 1 , Peiheng Zhou 3 , Chuanke Wang 4 , Haipeng Lu 3 , Wenpeng Liu 5
Small ( IF 13.0 ) Pub Date : 2023-12-19 , DOI: 10.1002/smll.202310107 Jingyao Wang 1 , Cuicui Ling 1, 2 , Xin Xue 1 , Hongguang Ji 1 , Chen Rong 1 , Qingzhong Xue 1 , Peiheng Zhou 3 , Chuanke Wang 4 , Haipeng Lu 3 , Wenpeng Liu 5
Affiliation
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Solar-blind ultraviolet (SBUV) to near-infrared (NIR) broadband photodetectors (BB-PD) have important applications in environmental monitoring and other applications. However, it is challenging to prepare SBUV–IR photosensitive materials via simple steps and to construct SBUV–IR broadband devices for multiplex detection with high sensitivity at different wavelengths. Here, self-powered and broadband photodetectors using a high-performance mixed dimensional Sb2O3 nanorod 1-dimension (1D)/monodisperse microdiamond-like PdTe2 3-dimension (3D)/Si (3D) heterojunction for multiplex detection of environmental pollutants with high sensitivity at broadband wavelength are developed. The 1D/3D mixed dimensional Sb2O3/PdTe2/Si structure combines the advantages of strong light absorption, high carrier transport efficiency of 1D Sb2O3 nanorods, and expansion of interface barrier caused by 3D microdiamond-like PdTe2 interlayer to improve the photocurrent density and self-powered ability. The efficient photogenerated charge separation enables anon/off ratio of more than 5 × 106. The device exhibits excellent photoelectric properties from 255 to 980 nm with the responsivity from 4.56 × 10−2 to 6.55 × 10−1 AW−1, the detectivity from 2.36 × 1012 to 3.39 × 1013 Jones, and the sensitivity from 3.90 × 107 to 1.10 × 1010 cm2 W−1 without external bias. Finally, the proposed device is applied for the multiplex monitoring of environmental pollution gases NO2 with the detection limit of 200 ppb and PM2.5 particles at mild pollution at broadband wavelength. The proposed BB-PD has great potential for multiplex detection of environmental pollutants and other analytes at broadband wavelength.
中文翻译：
基于高性能混合维度 Sb2O3/PdTe2/Si 异质结的自供电宽带光电探测器，用于多重环境监测
日盲紫外 (SBUV) 到近红外 (NIR) 宽带光电探测器 (BB-PD) 在环境监测和其他应用中具有重要应用。然而，通过简单的步骤制备SBUV-IR光敏材料并构建用于不同波长下高灵敏度多重检测的SBUV-IR宽带器件具有挑战性。这里，自供电和宽带光电探测器使用高性能混合维度 Sb 2 O 3纳米棒一维 (1D)/单分散类微米金刚石 PdTe 2 3 维 (3D)/Si (3D) 异质结，用于环境的多重检测开发了在宽带波长下具有高灵敏度的污染物。 1D/3D混合维度Sb 2 O 3 /PdTe 2 /Si结构结合了1D Sb 2 O 3纳米棒的强光吸收、高载流子传输效率以及3D类微金刚石PdTe 2中间层引起的界面势垒扩展的优点。提高光电流密度和自供电能力。高效的光生电荷分离使非/关比超过 5 × 10 6 。该器件在255至980 nm范围内表现出优异的光电性能，响应度为4.56 × 10 -2至6.55 × 10 -1 AW -1 ，探测灵敏度为2.36 × 10 12至3.39 × 10 13 Jones，灵敏度为3.90 × 10 7至1.10 × 10 10 cm 2 W -1无外部偏压。 最后，该装置应用于宽带波长下检测限为200 ppb的环境污染气体NO 2和轻度污染的PM 2.5颗粒的多重监测。所提出的 BB-PD 在宽带波长下对环境污染物和其他分析物进行多重检测具有巨大潜力。
更新日期：2023-12-19
中文翻译：
基于高性能混合维度 Sb2O3/PdTe2/Si 异质结的自供电宽带光电探测器，用于多重环境监测
日盲紫外 (SBUV) 到近红外 (NIR) 宽带光电探测器 (BB-PD) 在环境监测和其他应用中具有重要应用。然而，通过简单的步骤制备SBUV-IR光敏材料并构建用于不同波长下高灵敏度多重检测的SBUV-IR宽带器件具有挑战性。这里，自供电和宽带光电探测器使用高性能混合维度 Sb 2 O 3纳米棒一维 (1D)/单分散类微米金刚石 PdTe 2 3 维 (3D)/Si (3D) 异质结，用于环境的多重检测开发了在宽带波长下具有高灵敏度的污染物。 1D/3D混合维度Sb 2 O 3 /PdTe 2 /Si结构结合了1D Sb 2 O 3纳米棒的强光吸收、高载流子传输效率以及3D类微金刚石PdTe 2中间层引起的界面势垒扩展的优点。提高光电流密度和自供电能力。高效的光生电荷分离使非/关比超过 5 × 10 6 。该器件在255至980 nm范围内表现出优异的光电性能，响应度为4.56 × 10 -2至6.55 × 10 -1 AW -1 ，探测灵敏度为2.36 × 10 12至3.39 × 10 13 Jones，灵敏度为3.90 × 10 7至1.10 × 10 10 cm 2 W -1无外部偏压。 最后，该装置应用于宽带波长下检测限为200 ppb的环境污染气体NO 2和轻度污染的PM 2.5颗粒的多重监测。所提出的 BB-PD 在宽带波长下对环境污染物和其他分析物进行多重检测具有巨大潜力。
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