Advantages of naphthalene as a building block for organic solid state laser dyes: smaller energy gaps and enhanced stability

Abstract

Organic laser dyes exhibiting very low amplified spontaneous emission (ASE) thresholds in green and yellow region were developed based on a stilbene structure which is often used for the blue...

Quantum Dynamical Approach to Predicting the Optical Pumping Threshold for Lasing in Organic Materials

“…Molecular S 1 -state energy ε e and molecular transition dipole μ eg are inversely proportional to laser threshold I thred . This is consistent with the experimental results . When molecular S 1 -state energy ε e decreases, the intracavity photons will be quenched faster (shown in Table ), which leads to the increase in laser threshold I thred .…”

“…This is consistent with the experimental results. 40 When molecular S 1state energy ε e decreases, the intracavity photons will be quenched faster (shown in Table 2), which leads to the increase in laser threshold I thred . The decrease in molecular transition dipole μ eg will weaken the ability of external fields to disrupt the initial steady state of the intracavity system, leading to an increase in laser threshold I thred , although reorganization energy λ m has almost no effect on laser threshold I thred .…”

Tailor‐Made Multi‐Resonance Terminal Emitters toward Narrowband, High‐Efficiency, and Stable Hyperfluorescence Organic Light‐Emitting Diodes

“…The data are summarized in Figure S13 and Table S2 (Supporting Information). [ 35 ] Both CzBN and CzBNNa with TADF‐active MREs showed appreciably poorer photostability compared with that of CzBNPyr with no TADF activity. The order of photostability of the HF films is CzBN (PL 90 = 1.93 h) < CzBNNa (2.35 h) < CzBNPyr (3.02 h).…”

Excited-state properties of organic semiconductor dyes as electrically pumped lasing candidates from new optimally tuned range-separated models

“…Since the demonstration of lasing from an electrically pumped organic semiconductor laser diode (OSLD) in 2019, 1 the recent developments in the field of optoelectronics have been extended to this young and challenging research arena. [2][3][4][5][6][7][8] As a matter of fact, although the first optically pumped organic semiconductor laser was reported in 1996 9,10 and developed dramatically in the past two decades, 11,12 the electrically pumped OSLD was not realized until most recently. 1 This is mainly due to the wavelength tunability (covering lasing wavelengths across the full visible spectrum), mechanical flexibility, unique optoelectronic properties, surface emission, and lowcost manufacturability of electrically pumped OSLDs.…”