These compounds with a small direct band gap may potentially be effective in absorbing, detecting and emitting long infrared wavelengths even when they are processed into thin films, making them ...

Discovery of non-toxic semiconductors with a direct band gap in the near-infrared NIMS and the Tokyo Institute of Technology have jointly discovered that the chemical compound Ca3SiO is a direct ...

In a new study, researchers at Osaka University have created the world's first compact, tunable-wavelength blue semiconductor laser, a significant advancement for far-ultraviolet light technology ...

When indented by a probe in darkness, wafers of some semiconductors are putty-like. When illuminated by light whose wavelength matches the band gap, they become hard, as electrons and holes freed ...

An organic solar cell. Courtesy: Allison Kalpakci Solar cells based on wide-band-gap semiconductors work better under water than the narrow-band-gap ones used in conventional silicon photovoltaic ...

More information: Taichi Masuda et al, Neural network ensembles for band gap prediction, Computational Materials Science (2024). DOI: 10.1016/j.commatsci.2024.113327 Provided by Kyoto University ...

In these and in other applications, such as solar cells, a key parameter is the energy gap between electronic states. It determines the wavelength of the light that is emitted or absorbed.

A semiconductor with a “tuneable” gap that can be changed externally –- by applying a voltage, for example –- could lead to new types of electronic devices, notably lasers where the wavelength of the ...

A new publication from Opto-Electronic Science; DOI 10.29026/oes.2023.230005 overviews how GaN-based LED achieves high rate Wavelength division multiplexing visible light communication system with ...