Recent progress of sulphur-containing high-efficiency organic light-emitting diodes (OLEDs)

Abstract

In the last decades, organic light-emitting diodes (OLEDs) have been rapidly developed and occupy an important position in the lighting and display market. Early conventional fluorescent OLEDs materials can only...

Facile Synthesis of S‐Fused Multi‐Membered Polycyclic Heterocycles: A Construction Strategy towards Thermally Stable Thiepine Derivatives

“…[ 2 ] Therefore, S‐fused heterocycles have attracted tremendous attention due to their unique electronic and optical characteristics, such as intense luminescence, narrow band gap, high charge‐carrier mobility, and intriguing self‐assembly behaviors. [ 3‐4 ] Among various S‐heterocycles, five‐membered thiophene has become a star building block to construct organic semiconductors for optoelectronic applications, such as light‐emitting diodes (LEDs), [ 5 ] organic photovoltaics (OPVs), [ 6 ] and field‐effect transistors (FETs). [ 7 ] In comparison to five‐membered thiophene ring with 6 π‐electrons, six‐membered thiopyran [ 8 ] and seven‐membered thiepine [ 9 ] rings (Figure 1a) contain 7 and 8 π‐electrons, respectively, and thus generally exhibit nonaromaticity and antiaromaticity according to Hückel's rules.…”

Enhanced performance of ZnO microwire/PEDOT:PSS heterojunction ultraviolet photodetectors via carbon nanohorns and DMSO treatment

“…Conducting polymers have attracted tremendous attention for their potential applications in photodetectors, solar cells, organic light emitting diodes, flexible optoelectronic devices and so on. [1][2][3][4][5][6][7] Compared with inorganic materials, conducting polymers demonstrate significant advantages of light-weight, low-temperature processing, low-cost fabrication, excellent electrical performances and mechanical flexibility, providing potential applications in power-efficient, miniaturized, integrated and wearable optoelectronic devices. [8][9][10][11][12][13] Currently, a large number of conducting polymers (like polypyrrole, polyaniline, poly(3-hexylthiophene), poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), etc.)…”

Theoretical studies on boron dimesityl-based thermally activated delayed fluorescence organic emitters: excited-state properties and mechanisms

“…Organic light-emitting diodes (OLEDs) have become an integral part of luminescent materials and have achieved widespread applications in screen displays, lighting facilities, etc. [1][2][3][4][5] Since the maximum quantum yield of traditional fluorescent materials is only 25%, people have been compelled to find alternatives with higher luminous efficiency. At present, two mainstream light-emitting materials could capture and exploit both singlet and triplet excitons with a theoretical quantum yield of 100%.…”