Progress in ultraviolet photodetectors based on II–VI group compound semiconductors

Abstract

This review provides an overview of the basic concepts and operation mechanisms of ultraviolet (UV) photodetectors (PDs), the main research status, and future outlooks of II–VI group compound semiconductor-based UVPDs.

Wafer-Scale, Thickness-Controlled p-CuInSe2/n-Si Heterojunction for Self-Biased, Highly Sensitive, and Broadband Photodetectors

“…Thus, a slightly slower response for the 58 nm thickness was attributed to the lowest W D and highest capacitance at which efficient photodetector performance parameters were achieved. Thus, there is a trade-off between the photodetector responsivity and response time that make it critical to choose the appropriate CuInSe 2 thickness …”

“…Thus, there is a trade-off between the photodetector responsivity and response time that make it critical to choose the appropriate CuInSe 2 thickness. 54 ■…”

Machine learning and density functional theory simulation of the electronic structural properties for novel quaternary semiconductors

“…Optoelectronic semiconductors that exhibit excellent electronic and optical properties have significant application potential in solar cells, 1,2 light-emitting diodes (LEDs), 3,4 laser diodes, 5 bioimaging, 6 and photodetectors. 7,8 Throughout, the crystal structures of optoelectronic semiconductors are mainly comprised of octahedral and tetrahedral structures. The typical representative octahedral structure is a perovskite in which Pb-based perovskites present superb optical properties, such as a high absorption conversion and narrow luminance spectra.…”

A Simple-Structured Perovskite Wavelength Sensor for Full-Color Imaging Application

“…Such a high bias voltage effectively separates almost all electron−hole pairs, affording a weak photocurrent shift. 44,45 In addition, the MSC wavelength sensor has also exhibited excellent device stability under 1 V bias driving in Figure S10.…”

“…However, when the bias voltage increases to 3 V, the photocurrent slightly increases. Such a high bias voltage effectively separates almost all electron–hole pairs, affording a weak photocurrent shift. , Figure f presents the I Ph,1 /I Ph,2 –wavelength relation at different voltages of 1, 2, and 3 V, where all bias voltage-related curves exhibit a very slightly downward shift with increasing bias voltage and exhibit similar monotonic functions. Notably, the I Ph,1 /I Ph,2 –wavelength curves almost overlap at 2 and 3 V bias voltage.…”