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3D TiO2/Diamond Ultraviolet Detector Using Back‐to‐Back Pd Schottky Electrode
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-06-23 , DOI: 10.1002/pssa.202000218 Zhangcheng Liu 1 , Dan Zhao 1 , Tai Min 2 , Hongxing Wang 1
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-06-23 , DOI: 10.1002/pssa.202000218 Zhangcheng Liu 1 , Dan Zhao 1 , Tai Min 2 , Hongxing Wang 1
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The photoelectric properties of a 3D TiO2/diamond ultraviolet (UV) detector that uses symmetrical Pd Schottky electrodes are investigated. Because of the back‐to‐back Schottky contact between Pd and TiO2, the detector exhibits an extremely low dark current of 0.25 pA at 10 V. When the illuminating light wavelength is shorter than 260 nm, the photocurrent first increases and then decreases with the increase in the voltage, displaying a differential negative photoconductivity. Therefore, the responsivity in the deep UV region, which corresponds to a diamond photoresponse, increases at a low voltage whereas decreases at a high voltage. At 2 V, the responsivity reaches a maximum value of 5.32 mA W−1 at 215 nm and the 215/600 nm rejection ratio reaches 2 × 103.
中文翻译：
使用背对背钯肖特基电极的3D TiO2 /金刚石紫外检测器
研究了使用对称Pd肖特基电极的3D TiO 2 /金刚石紫外（UV）检测器的光电性能。由于Pd和TiO 2背对背的肖特基接触，该检测器在10 V时显示出非常低的暗电流0.25 pA。当照明光波长短于260 nm时，光电流首先增加，然后降低。电压的增加，显示出负的负光电导性。因此，对应于金刚石光响应的深UV区域中的响应度在低压下增加而在高压下降低。在2 V时，响应度在215 nm处达到5.32 mA W -1的最大值，并且215/600 nm的抑制比达到2×103。
更新日期：2020-08-24
中文翻译：
使用背对背钯肖特基电极的3D TiO2 /金刚石紫外检测器
研究了使用对称Pd肖特基电极的3D TiO 2 /金刚石紫外（UV）检测器的光电性能。由于Pd和TiO 2背对背的肖特基接触，该检测器在10 V时显示出非常低的暗电流0.25 pA。当照明光波长短于260 nm时，光电流首先增加，然后降低。电压的增加，显示出负的负光电导性。因此，对应于金刚石光响应的深UV区域中的响应度在低压下增加而在高压下降低。在2 V时，响应度在215 nm处达到5.32 mA W -1的最大值，并且215/600 nm的抑制比达到2×103。
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