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Research Group Develops Thermo-Photoluminescence for Rapid Imaging and Measurement

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Today, the most common optical technique for imaging and measurement of thermal conductivity of semiconductors is time-domain thermoreflectance (TDTR), in which a femtosecond pump pulse is used to heat up the sample through a metal film. While widely adopted, the difficulties are well known. Besides the expensive femtosecond lasers, the samples have to be polished to provide a clean, flat surface for a controlled thermal contact with the metal film, so TDTR is invasive and requires careful sample preparation. To overcome these shortcomings, a joint research group from University of...Read full article

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    Published: May 2020
    Glossary
    photoluminescence
    Photoluminescence is a phenomenon in which a material absorbs photons (light) at one wavelength and then re-emits photons at a longer wavelength. This process occurs when electrons in the material are excited to higher energy states by absorbing photons and subsequently return to lower energy states, emitting photons in the process. The emitted photons have less energy and longer wavelengths than the absorbed photons. Photoluminescence can be broadly categorized into two types: ...
    optoelectronics
    Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light and its interactions with different materials. The term "optoelectronics" is a combination of "optics" and "electronics," reflecting the interdisciplinary nature of this field. Optoelectronic devices convert electrical signals into optical signals or vice versa, making them crucial in various technologies. Some key components and applications of optoelectronics include: ...
    Research & TechnologyAsia-PacificUniversity of HoustonBaylor UniversityfemtosecondsemiconductorsphotoluminescenceoptoelectronicsSensors & DetectorsphononsTest & MeasurementImagingTech Pulse

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