High‐Performance Harsh‐Environment‐Resistant GaO_X Solar‐Blind Photodetectors via Defect and Doping Engineering (Adv. Mater. 1/2022)

Ultrahigh Detectivity Broad Spectrum UV Photodetector with Rapid Response Speed Based on p‐β Ga2O3/n‐GaN Heterojunction Fabricated by a Reversed Substitution Doping Method

“…UV photodetectors (PDs) have attracted enormous attention because of their versatile applications, such as missile warning, flame detection, bioaerosol detection, astronomical imaging, etc. [ 1–4 ] Extremely sensitive PDs, that have very high detectivity, D *, are required due to the strong atmospheric scattering of UV, especially for short‐wavelength UV light. At present, photomultiplier tubes (PMTs) with very large D * values ranging up to D * = 4 × 10 14 cm Hz 1/2 W −1 are mainly employed to detect weak UV light signals.…”

Highly Sensitive and Stable Self‐Powered UV Photodetector Based on Amorphous ZnGa2O4/NiO Type‐II p–n Heterojunction via Low‐Temperature and Band Alignment

“…High‐performance ultraviolet (UV) photodetectors (PDs) have recently attracted considerable interest due to their excellent application value in military and civilian fields, such as optical imaging, ozone‐layer monitoring, flame detection, missile guidance, and short‐range communication security. [ 1–4 ] Depending on the wavelength, UV light can be divided into four spectral bands, including UVA (315–400 nm), UVB (280–315 nm), UVC (200–280 nm), and vacuum UV (VUV) (10–200 nm). Among them, UVC and vacuum UV from solar radiation cannot reach the Earth's surface due to absorption by the ozone layer, which provides an extremely low natural background for solar‐blind UV detection.…”

Piezo-phototronic effect regulated broadband photoresponse of a-Ga2O3/ZnO heterojunction

“…12,13 Benefiting from a low preparation temperature and improved light absorption capability, 14,15 amorphous Ga 2 O 3 (a-Ga 2 O 3 ) has been demonstrated as a potential candidate for DUV photodetectors with adaptability to flexible substrates and an extended spectral absorption range. 6,[16][17][18] Recently, broadband photodetectors with a wide spectral photoresponse, as essential components of the modern integrated and miniaturized electronics industry, have received widespread attention for many technological applications, such as in imaging, optical communications, remote sensing, photoelectric memory, environment monitoring and military surveillance. [19][20][21][22] Moreover, the flexible characteristics of these device will expand their potential uses in human-machine interfaces and wearable applications.…”