Setting up a Tunable-Wavelength Laser for Measuring Mid-Infrared Emission from InSb Quantum Dots
Small bandgap semiconductors, such as PbS, PbSe, and InSb, that are optically sensitive to near- and mid-infrared (IR) light can be used to increase the wavelength solar spectrum sensitivity of modern, multipartite photovoltaics. As with other semiconducting materials, small bandgap semiconductors can be formed into quantum dots or colloidal nanocrystals, thus enhancing both their absorptive cross-sections and emission efficiencies, which are crucial optoelectronic parameters. Critically, the large exciton radii of many small bandgap semiconductors allows researchers to control the semiconducting ...
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