New synthesis of highly potential efficient bluish-green electroluminescent materials based on 1,3,4-oxadiazole–triazolopyridinone–carbazole derivatives for single-layer devices

Abstract

New potential bluish-green electroluminescent materials of 1,3,4-oxadiazole-triazolopyridinone-

An experimental investigation of a 100-W high-power light-emitting diode array using vapor chamber–based plate

“…Since the 20th century, high-power light-emitting diode (LED) is keeping attracting interests due to its significant impacts on solid-state illumination industry, 1,2 and it is a strong candidate for the next generation of general illumination applications. 3 However, at present, the thermal fluxes of LED chips are more than 100 W/cm 2 , the junction temperature of LED should be controlled below 110°C, and thermal problem caused by the heat generated within the LED itself is still a bottleneck to limit the stability, reliability, and lifetime of high-power LED.…”

“…3 Therefore, effective thermal design of LED packages with low thermal resistance is critical to improve the performance of LED. 1,2,4,5 In order to enhance the thermal performance of the device, currently, cooling technical development related to the application of two-phase flow heat transfer assembly to thermal modules has become mature and heat pipe-based thermal module is one of the best choices. 6 Phase-change cooling is a promising method for cooling high heat flux devices.…”

Synthesis of 1,3,4‐Oxadiazole‐Based Aromatic and Heterocyclic/Phenylpyrazole Derivatives

“…Therefore, the development of new π‐conjugated 1,3,4‐oxadiazole‐based heterocyclic compounds as EL materials has attracted attention , particularly in the blue region . Representative examples include 1,3,4‐oxadiazole hybridized with pyridine , pyrimidine , carbazole , 1,2,3‐triazole , 1,2,3‐triazole‐pyridine , triazolopyridinone , triazolopyridinone‐carbazole , and spirobifluorene .…”