Improved spectral response of an InAs QD RC-SACM-APD with Ta 2O5/SiO2 DBRs

Dong Ho Kim; Hong Joo Song; Cheong Hyun Roh; Cheol Koo Hahn; Shi Jong Leem; Noriaki Tsurumachi; Tae Geun Kim

doi:10.1109/NANO.2007.4601281

Improved spectral response of an InAs QD RC-SACM-APD with Ta ₂O₅/SiO₂ DBRs

Dong Ho Kim, Hong Joo Song, Cheong Hyun Roh, Cheol Koo Hahn, Shi Jong Leem, Noriaki Tsurumachi, Tae Geun Kim

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

We report the improvement in the spectral response of an InAs QD resonant-cavity separate absorption, charge, and multiplication avalanche photodetector (RC-SACM-APD) by increasing the quantum efficiency (QE) using dielectric Ta₂O₅/SiO₂ top distributed Bragg reflectors (DBRs). The reflectivities of the top and bottom DBRs were numerically designed to be 70% and 99.1%, respectively, in order to maximize the QE. The spectral response characteristics of the InAs QD RC-SACM-APD with enhanced top DBRs was remarkably improved at 1098 nm, which is close to the target wavelength of 1100 nm, and its full width at half-maximum (FWHM) was 19 nm. The photoluminescence (PL) spectra revealed an intense and narrow single-mode peak at 1101 nm. The FWHM of the PL peak was as narrow as 8 nm and the difference in wavelength between the spectrum and the PL peak was as small as 3 nm.

Original language	English
Title of host publication	2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings
Pages	681-685
Number of pages	5
DOIs	https://doi.org/10.1109/NANO.2007.4601281
Publication status	Published - 2007
Event	2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007 - Hong Kong, China Duration: 2007 Aug 2 → 2007 Aug 5

Publication series

Name	2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings

Other

Other	2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007
Country/Territory	China
City	Hong Kong
Period	07/8/2 → 07/8/5

Keywords

Quantum efficiency (QE)
Resonant-cavity effect (RCE)
Spectral response characteristic
Wavelength-selective-absorption

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

Access to Document

10.1109/NANO.2007.4601281

Cite this

Kim, D. H., Song, H. J., Roh, C. H., Hahn, C. K., Leem, S. J., Tsurumachi, N., & Kim, T. G. (2007). Improved spectral response of an InAs QD RC-SACM-APD with Ta ₂O₅/SiO₂ DBRs. In 2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings (pp. 681-685). Article 4601281 (2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings). https://doi.org/10.1109/NANO.2007.4601281

Improved spectral response of an InAs QD RC-SACM-APD with Ta ₂O₅/SiO₂ DBRs. / Kim, Dong Ho; Song, Hong Joo; Roh, Cheong Hyun et al.
2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings. 2007. p. 681-685 4601281 (2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, DH, Song, HJ, Roh, CH, Hahn, CK, Leem, SJ, Tsurumachi, N & Kim, TG 2007, Improved spectral response of an InAs QD RC-SACM-APD with Ta ₂O₅/SiO₂ DBRs. in 2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings., 4601281, 2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings, pp. 681-685, 2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Hong Kong, China, 07/8/2. https://doi.org/10.1109/NANO.2007.4601281

Kim DH, Song HJ, Roh CH, Hahn CK, Leem SJ, Tsurumachi N et al. Improved spectral response of an InAs QD RC-SACM-APD with Ta ₂O₅/SiO₂ DBRs. In 2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings. 2007. p. 681-685. 4601281. (2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings). doi: 10.1109/NANO.2007.4601281

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abstract = "We report the improvement in the spectral response of an InAs QD resonant-cavity separate absorption, charge, and multiplication avalanche photodetector (RC-SACM-APD) by increasing the quantum efficiency (QE) using dielectric Ta2O5/SiO2 top distributed Bragg reflectors (DBRs). The reflectivities of the top and bottom DBRs were numerically designed to be 70% and 99.1%, respectively, in order to maximize the QE. The spectral response characteristics of the InAs QD RC-SACM-APD with enhanced top DBRs was remarkably improved at 1098 nm, which is close to the target wavelength of 1100 nm, and its full width at half-maximum (FWHM) was 19 nm. The photoluminescence (PL) spectra revealed an intense and narrow single-mode peak at 1101 nm. The FWHM of the PL peak was as narrow as 8 nm and the difference in wavelength between the spectrum and the PL peak was as small as 3 nm.",

keywords = "Quantum efficiency (QE), Resonant-cavity effect (RCE), Spectral response characteristic, Wavelength-selective-absorption",

author = "Kim, {Dong Ho} and Song, {Hong Joo} and Roh, {Cheong Hyun} and Hahn, {Cheol Koo} and Leem, {Shi Jong} and Noriaki Tsurumachi and Kim, {Tae Geun}",

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AB - We report the improvement in the spectral response of an InAs QD resonant-cavity separate absorption, charge, and multiplication avalanche photodetector (RC-SACM-APD) by increasing the quantum efficiency (QE) using dielectric Ta2O5/SiO2 top distributed Bragg reflectors (DBRs). The reflectivities of the top and bottom DBRs were numerically designed to be 70% and 99.1%, respectively, in order to maximize the QE. The spectral response characteristics of the InAs QD RC-SACM-APD with enhanced top DBRs was remarkably improved at 1098 nm, which is close to the target wavelength of 1100 nm, and its full width at half-maximum (FWHM) was 19 nm. The photoluminescence (PL) spectra revealed an intense and narrow single-mode peak at 1101 nm. The FWHM of the PL peak was as narrow as 8 nm and the difference in wavelength between the spectrum and the PL peak was as small as 3 nm.

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