The invention discloses a fluorescent carbon dot narrow in full width at half maximum and a preparation method and application thereof. An electrochemical method is adopted, water is used as electrolyte, a graphite rod serves as a working electrode, the voltage is applied, and the graphite rod ...
In the devices, 3-PhQAD realizessuperior performance with a maximum external quantum efficiency (EQE)of 19.1% and a narrow full width at half-maximum (FWHM) of 44 nm,whereas a maximum EQE of 18.7% and an extremely narrow FWHM of 34nm are realized for 7-PhQAD. These superior results ...
aX-ray diffraction (XRD) indicates the dependence of the crystallinity of crystal to the growth conditions with the best rocking curve as narrow as 15.8 arcsec full width at half-maximum (FWHM). X-射线衍射 (XRD) 作为表明水晶结晶性的依赖性到成长条件与最佳的晃动的曲线狭窄象15.8弧秒全宽在一半...
The obtained PL spectrum of CPO:1.5%Bi3+ exhibits an extraordinary narrow-band violet emission in the range of 370–480 nm peaking at 392 nm with a full width at half maximum (FWHM) of only 36 nm and a Stokes shift = 2738 cm−1 under 354 nm excitation, which is ascribed to the ...
(EQE) of ~36.8% in an OLED with a binary EML composed of a bipolar TADF host and Se-integrated MR emitter was obtained, its spectral full width at half maximum (FWHM) was as broad as 48 nm, which is much broader than that (ca. 34 nm) of its parent compound BNCZ (for its...
In general, photonic nanojets (PNJs) occur only when the refractive index (Ri) difference between the microparticle and background media is less than 2. The minimum full width at half-maximum (FWHM) of the PNJ is ~130 nm (approximately one-third of th
Meanwhile, their full width at half-maximum (FWHM) are still too large (about 75 nm), which are far from the ideal one of <50 nm (Scheme 1). Therefore, it is necessary to develop efficient deep-blue OLEDs based on PM derivatives with reasonable molecular design. In order to obtain ...
Indeed, some pioneering studies reported high-temperature radiation from carbon nanotubes under Joule-heating conditions18,19,20,21, exhibiting light emission spectra consisting of broad peaks (full-width at half-maximum (FWHM) of ~350–400 meV)19,20 or no peak features at all18,21. However...
(full-width at half-maximum is smaller than 0.12 nm),linear polarization at 1 080-nm wavelength,repetition rate of 51 kHz,and pulse duration of approximately 50 ns.Based on this pulsed amplified radiation,3.5 W of green laser,with an optical-to-optical efficiency of 27.3%,is obtained via ...
The linewidth (full width at half-maximum) of the light detector 18 is equal to the free spectral range (FSR) of the cavity 24 divided by the finesse (F) of the cavity. Linewidth is narrower for higher finesse values. For Rb˜1, and given the matching condition is satisfied, the ...