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Hao Xin

Publications and source records attributed to Hao Xin.

2 recordsLinked to original sources
PubMed2003

Efficient electroluminescence from a new terbium complex.

Although lanthanide complexes have distinct advantages for use as light-emitting materials, such as sharp emission bands and 100% quantum efficiency theoretically, their performance was far below what is expected. A new terbium complex was designed and synthesized. Devices using it as an emitter present satisfactory performance, with the highest brightness of 12 000 cd/m2 and power efficiency of 11.3 lm/W, which is nearly 1 order of magnitude higher than what was reported previously. Comparison with analogous complexes indicated that this result originated from the terbium complex's well-balanced charge-transport properties.

Journal Article↗
PubMed2003

Bright and monochromic red light-emitting electroluminescence devices based on a new multifunctional europium ternary complex.

A novel europium(III) complex, tris(dibenzoylmethanato)(2-4'-triphenylamino)imidazo[4,5-f]1,10-phenanthroline)europium(III), Eu(DBM)3(TPIP), is synthesized. The light-emitting center, hole-transporting triphenylamine and electron-transporting phenanthroline fragments are integrated into one molecule. A single-layer device of ITO/Eu(DBM)3(TPIP) (60 nm)/Mg0.9Ag0.1/Ag exhibits Eu(III)-based pure red emission with a maximum brightness of 19 cd m(-2) at 13.5 V and 280 mA cm(-2), and an onset driving voltage of 8 V. A four-layer device of ITO/TPD (20 nm)/Eu(DBM)3(TPIP) (40 nm)/BCP (20 nm)/AlQ(40 nm)/Mg0.9Ag0.1/Ag gives a maximum Eu(III)-based pure red emitting luminance of 1305 cd m(-2) at 16 V and 255 mA cm(-2) with an onset driving voltage of 6 V; the maximum external quantum yield and luminous yield are estimated to be 0.85% and 1.44 lm W(-1), respectively, at 7.5 V and 0.25 mA cm(-2).

Journal Article↗