Light polarization sensitive photodetectors with m- and r-plane homoepitaxial ZnO/ZnMgO quantum wells

Tabares Jimenez, Gema and Hierro Cano, Adrián and Lopez Ponce, Manuel and Muñoz Merino, Elias and Vinter, B. and Chauveau, Jean Michelle (2015). Light polarization sensitive photodetectors with m- and r-plane homoepitaxial ZnO/ZnMgO quantum wells. "Applied Physics Letters", v. 106 (n. 6); pp.. ISSN 0003-6951. https://doi.org/10.1063/1.4908183.

Description

Title: Light polarization sensitive photodetectors with m- and r-plane homoepitaxial ZnO/ZnMgO quantum wells
Author/s:
  • Tabares Jimenez, Gema
  • Hierro Cano, Adrián
  • Lopez Ponce, Manuel
  • Muñoz Merino, Elias
  • Vinter, B.
  • Chauveau, Jean Michelle
Item Type: Article
Título de Revista/Publicación: Applied Physics Letters
Date: February 2015
ISSN: 0003-6951
Volume: 106
Subjects:
Faculty: Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM) (UPM)
Department: Ingeniería Electrónica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Homoepitaxial ZnO/(Zn,Mg)O multiple quantum wells (MQWs) grown with m- and r-plane orientations are used to demonstrate Schottky photodiodes sensitive to the polarization state of light. In both orientations, the spectral photoresponse of the MQW photodiodes shows a sharp excitonic absorption edge at 3.48 eV with a very low Urbach tail, allowing the observation of the absorption from the A, B and C excitonic transitions. The absorption edge energy is shifted by ∼30 and ∼15 meV for the m- and r-plane MQW photodiodes, respectively, in full agreement with the calculated polarization of the A, B, and C excitonic transitions. The best figures of merit are obtained for the m-plane photodiodes, which present a quantum efficiency of ∼11%, and a specific detectivity D* of ∼6.4 × 1010 cm Hz1/2/W. In these photodiodes, the absorption polarization sensitivity contrast between the two orthogonal in-plane axes yields a maximum value of (R⊥/R||)max ∼ 9.9 with a narrow bandwidth of ∼33 meV.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainEC2011-28076-C02-01UnspecifiedUnspecifiedUnspecified
Government of SpainTEC2014-60173-C2-2UnspecifiedUnspecifiedUnspecified

More information

Item ID: 40801
DC Identifier: http://oa.upm.es/40801/
OAI Identifier: oai:oa.upm.es:40801
DOI: 10.1063/1.4908183
Official URL: http://scitation.aip.org/content/aip/journal/apl/106/6/10.1063/1.4908183
Deposited by: Memoria Investigacion
Deposited on: 05 Sep 2016 16:24
Last Modified: 05 Jun 2019 15:22
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