Quantitative analysis of external quantum efficiencies in bilayer-based Schottky barrier photodetectors

Jongeun Seok; Yeonghoon Jin; Kyoungsik Yu

doi:10.1117/12.3002832

9 March 2024 Quantitative analysis of external quantum efficiencies in bilayer-based Schottky barrier photodetectors

Jongeun Seok, Yeonghoon Jin, Kyoungsik Yu

Proceedings Volume PC12882, Optical Components and Materials XXI; PC128820C (2024) https://doi.org/10.1117/12.3002832
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Silicon-based Schottky barrier photodetectors (SBPDs) have become a popular choice for near-infrared (NIR) applications due to their cost-effectiveness and compatibility with the CMOS fabrication process. This work provides a quantitative analysis of the external quantum efficiency in platinum/copper bilayer SBPDs, extending the conventional single-layer analyses. We conducted a systematic investigation of optical losses, energy distribution losses, and momentum mismatch losses, successfully matching our theoretical predictions to experimental results. Our study also demonstrates the long-term stability of bilayer SBPDs in the NIR region. These findings have significant implications for affordable NIR photodetection technologies.

Conference Presentation

Citation Download Citation

Jongeun Seok, Yeonghoon Jin, and Kyoungsik Yu "Quantitative analysis of external quantum efficiencies in bilayer-based Schottky barrier photodetectors", Proc. SPIE PC12882, Optical Components and Materials XXI, PC128820C (9 March 2024); https://doi.org/10.1117/12.3002832

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