Research Publications in journals:
High optical sensitivity to ambient conditions of uncapped InGaAs surface quantum dots
Year:2012
Research Areas
- Physics chemical and mathematical,
- Phisics,
- Physics - Structure of materials,
- Description
Information
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Abstract
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| The influence of the environment on the optical properties of self-assembled In0.5Ga0.5As surface quantum dots is studied as a function of different ambient conditions for sensing applications. Their room temperature photoluminescence (PL) quenches under vacuum and decreases strongly under dry O2 or N2 environments. Nevertheless, they have a strong signal at 1.55 lm in air or in a wet atmosphere. The presence of water molecules in the environment improves the PL intensity likely due to its polar character and therefore its easier adsorption by the surface dangling bonds, leading to a suppression of the non-radiative recombination centers. | |
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International
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Si |
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JCR
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Si |
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Title
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Applied Physics Letters |
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ISBN
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0003-6951 |
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Impact factor JCR
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0 |
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Impact info
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Volume
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Journal number
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From page
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131601-1 |
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To page
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131601-3 |
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Month
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SIN MES |
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Ranking
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Open Access publication
Participants
- Autor: M.Jose Milla Rodrigo UPM
Research Group, Departaments and Institutes related
- Creador: Departamento: Ingeniería Electrónica