Highly efficient blue emitting one dimensional lead-free nanocrystals

Abstract

Cesium copper halide perovskites-like nanocrystals (NCs) starts to emerge recently due to their nontoxicity, highly efficient and peculiar optoelectronic properties; however, this field is far from being quested yet. In...

Recent Advances and Opportunities of Eco‐Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications

“…Meanwhile, the 1D zigzag structure of "538" phase occurs only in the Cl−I mixtures, while only the solid solution of the Pnma space group was observed for the Cl−Br and Br−I mixtures, which may be related to the large discrepancy in ionic radius and electronegativity between the Cl − and I − anions. [57][58][59] Because all the above TCHs have univalent Cu + ion on the B site, their highest coordination number is four, which is caused by the small ion radius and high 3d 10 energy level of Cu.…”

Yellow-emissive organic copper(i) halide single crystals with [Cu4I4] cubane unit as efficient X-ray scintillators

“…15 However, they still face some problems, such as the low light yields of silver(I)-based scintillators, 15,16 the potential health effects of heavy metals in bismuth(III)-based scintillators, the easy oxidation of Sn 2+ to Sn 4+ of tin(II)based scintillators, and the high hygroscopicity of manganese(II)-based scintillators in air. [17][18][19] Compared with these materials, due to their low cost, 20 non-toxicity, 10,[21][22][23] and high atomic number, copper(I) iodide-based halides are expected to become a potential scintillation material, and they have been reported with various functional organic cations. For instance, Fu et al developed 0D ultra-broadband yellow-emitting (Ph 3 MeP) 2 Cu 4 I 6 and (Cy 3 MeP) 2 Cu 4 I 6 that are blue-light excitable, and their photoluminescence quantum yields (PLQY) reached 69% and 59%, respectively.…”

A high-performance UV photodetector with superior responsivity enabled by a synergistic photo/thermal enhancement of localized surface plasmon resonance

“…To date, nanostructured semiconductors have offered the possibility of achieving a high photoelectric performance, in particular by the creation of one-dimensional (1D) structures due to their remarkable properties such as highly-crystalline nature, 13 high surface area, 14 carrier confinement, 15 and low carrier transit time. 16 However, the underlying methods to create nanostructured UV photodetectors with superior performance for application in air remain a challenge. In the last decade, research in this area has focused on the construction of heterostructure detectors, which are able to absorb and detect the photon energy and change the electron state within a heterojunction, thereby producing a built-in electric field to achieve efficient separation/transport of photoinduced carriers.…”