التفاصيل البيبلوغرافية
| العنوان: |
Self-Powered Sb 2 Te 3 /MoS 2 Heterojunction Broadband Photodetector on Flexible Substrate from Visible to Near Infrared. |
| المؤلفون: |
Wang, Hao, Dong, Chaobo, Gui, Yaliang, Ye, Jiachi, Altaleb, Salem, Thomaschewski, Martin, Movahhed Nouri, Behrouz, Patil, Chandraman, Dalir, Hamed, Sorger, Volker J. |
| المصدر: |
Nanomaterials (2079-4991); Jul2023, Vol. 13 Issue 13, p1973, 12p |
| مصطلحات موضوعية: |
HETEROJUNCTIONS, P-N heterojunctions, THIN film transistors, OPTICAL detectors, PHOTODETECTORS, VISIBLE spectra |
| مستخلص: |
Van der Waals (vdWs) heterostructures, assembled by stacking of two-dimensional (2D) crystal layers, have emerged as a promising new material system for high-performance optoelectronic applications, such as thin film transistors, photodetectors, and light-emitters. In this study, we showcase an innovative device that leverages strain-tuning capabilities, utilizing a MoS2/Sb2Te3 vdWs p-n heterojunction architecture designed explicitly for photodetection across the visible to near-infrared spectrum. These heterojunction devices provide ultra-low dark currents as small as 4.3 pA, a robust photoresponsivity of 0.12 A W−1, and reasonable response times characterized by rising and falling durations of 0.197 s and 0.138 s, respectively. These novel devices exhibit remarkable tunability under the application of compressive strain up to 0.3%. The introduction of strain at the heterojunction interface influences the bandgap of the materials, resulting in a significant alteration of the heterojunction's band structure. This subsequently shifts the detector's optical absorption properties. The proposed strategy of strain-induced engineering of the stacked 2D crystal materials allows the tuning of the electronic and optical properties of the device. Such a technique enables fine-tuning of the optoelectronic performance of vdWs devices, paving the way for tunable high-performance, low-power consumption applications. This development also holds significant potential for applications in wearable sensor technology and flexible electro-optic circuits. [ABSTRACT FROM AUTHOR] |
|
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder