High-efficiency deep-blue organic light-emitting diodes using dual-emitting layer

Blue organic light-emitting diodes based on phenyl-bridged fluoranthene and triphenylene derivatives

“…Among devices A-C with the fluoranthene-derived emitters, device B exhibited the most efficient EL efficiencies. This observation was attributed to balanced charge injection properties of devices [28]. As shown in Fig.…”

Efficient hybrid white organic light-emitting diodes with extremely long lifetime: the effect of n-type interlayer

“…In general, the properties of n-type materials are affected by three key factors in phosphor-based devices, including electron mobility, hole blocking ability and T 1 1 2 . On one hand, since the electron mobilities of Alq 3 , BAlq, Bebq 2 and TPBi are 10 −5 cm 2 /(V s) 21 , 10 −5 cm 2 /(V s) 24 , 10 −4 cm 2 /(V s) and 10 −4 cm 2 /(V s) 25 , respectively, electrons may be easier to pass through the Bebq 2 and TPBi IL than Alq 3 and BAlq IL, which leads to much more blue intensity in W4 and W5 than W2 and W3, and stronger red emissions are expected in W2 and W3. On the other hand, since the HOMOs of Alq 3 , BAlq, Bebq 2 and TPBi are 5.8 eV 21 , 5.9 eV 24 , 5.995 eV 26 and 6.2 eV 25 , respectively, holes may be difficult to pass through the TPBi IL than Alq 3 , BAlq and Bebq 2 IL, which results in much more red intensity in W2, W3 and W4 than W5.…”

Structural spectral response tuning in organic deep ultraviolet photodetectors

“…In this mixed PBHJs, photocurrent response gradually rises from 400 to 260 nm due to the absorption rise of organic semiconductors, and the decrease of response ranging from 250 to 200 nm chiefly results from the decline of transmittance of polymer PEDOT:PSS anode [10]. The response peak located at $260 nm may be mainly ascribed to separated charges buildup inside acceptor BAlq, because the TAPC donor has a larger hole mobility of 10 À2 cm 2 /Vs compared with the electron mobility of BAlq acceptor with 10 À5 cm 2 /Vs [25,26]. The detailed mechanism will be explained below.…”