WSE2/CUO PHOTODETCTOR ANALYSIS

Citation Author(s):
Tulika
Bajpai
Submitted by:
Shweta Tripathi
Last updated:
Wed, 02/14/2024 - 04:50
DOI:
10.21227/kt8k-2980
License:
Creative Commons Attribution
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Categories:
Other
Keywords:
Photodetector
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Abstract 

This letter reports a Al/WSe2/CuO/ITO structure based broadband photodetector. The low cost spin coating technique is utilized to deposit, p-type WSe2 film and n-type CuO film. The Al contacts were deposited over WSe2 film using thermal evaporation unit. The suggested photodetector gives the broad photo response with maximum  ResponsivityRS(A/W)  and External Quantum Efficiency (EQE) value of 3099 A/W,  3680A/W, and 493A/W; 1.20 × 106%, 1.52× 106% and 2.04 × 105% at 350nm (UV),  500nm (visible) and 950nm (IR) under application of -2V bias. The EQE value beyond 100% are attributed to trap assisted photomultiplication mechanism.

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I-V Analysis 

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