Near-infrared-to-visible highly selective thermal emitters based on an intrinsic semiconductor.

ABSTRACT: Control of the thermal emission spectra of emitters will result in improved energy utilization efficiency in a broad range of fields, including lighting, energy harvesting, and sensing. In particular, it is challenging to realize a highly selective thermal emitter in the near-infrared-to-visible range, in which unwanted thermal emission spectral components at longer wavelengths are significantly suppressed, whereas strong emission in the near-infrared-to-visible range is retained. To achieve this, we propose an emitter based on interband transitions in a nanostructured intrinsic semiconductor. The electron thermal fluctuations are first limited to the higher-frequency side of the spectrum, above the semiconductor bandgap, and are then enhanced by the photonic resonance of the structure. Th

SUBMITTER: Asano T 

PROVIDER: S-EPMC5182050 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature