Optoelectronic characteristics of CuO nanorods

Optoelectronic characteristics of p-type CuO nanorods, synthesized by a simple hydrothermal method, were investi- gated at different atmospheres and oxygen pressures. The CuO nanorods have lower resistance in air than in a vacuum, unlike the n-type semiconductors. This is explained in terms of the surface accumulation conduction. Measurements at different oxygen pressures indicate that oxygen has an important effect on the optoelectronic properties of p-type nanoma- terials.

Optoelectronic characteristics and application of black phosphorus and its analogs

The tunable bandgap from 0.3 eV to 2 eV of black phosphorus(BP)makes it to fill the gap in graphene.When studying the properties of BP more comprehensive,scientists have discovered that many twodimensional materials,such as tellurene,antimonene,bismuthene,indium selenide and tin sulfide,have similar structures and properties to black phosphorus thus called black phosphorus analogs.In this review,we briefly introduce preparation methods of black phosphorus and its analogs,with emphasis on the method of mechanical exfoliation(ME),liquid phase exfoliation(LPE)and chemical vapor deposition(CVD).And their characterization and properties according to their classification of singleelement materials and multi-element materials are described.We focus on the performance of passively mode-locked fiber lasers using BP and its analogs as saturable absorbers(SA)and demonstrated this part through classification of working wavelength.Finally,we introduce the application of BP and its analogs,and discuss their future research prospects.

Metal Halide Perovskite for next-generation optoelectronics:progresses and prospects

Metal halide perovskites(MHPs),emerging as innovative and promising semiconductor materials with prominent optoelectronic properties,has been pioneering a new era of light management(ranging from emission,absorption,modulation,to transmission)for next-generation optoelectronic technology.Notably,the exploration of fundamental characteristics of MHPs and their devices is the main research theme during the past decade,while in the next decade,it will be primarily critical to promote their implantation in the next-generation optoelectronics.In this review,we first retrospect the historical research milestones of MHPs and their optoelectronic devices.Thereafter,we introduce the origin of the unique optoelectronic features of MHPs,based on which we highlight the tunability of these features via regulating the phase,dimensionality,composition,and geometry of MHPs.Then,we show that owing to the convenient property control of MHPs,various optoelectronic devices with target performance can be designed.At last,we emphasize on the revolutionary applications of MHPs-based devices on the existing optoelectronic systems.This review demonstrates the key role of MHPs played in the development of modern optoelectronics,which is expected to inspire the novel research directions of MHPs and promote the widespread applications of MHPs in the next-generation optoelectronics.