| Summary: | 碩士 === 國立清華大學 === 化學系 === 97 === We used cyclolization to synthesize heteroaromatics that contain different numbers of
N to combine with non-conjugated ancillary ligand to synthesize a series of Pt(II)
complex. The phenyl group on the P atom of ancillary ligand created steric hindrance
which inhibits the Pt-Pt interaction in this series of compound. This series of
compound did not emit phosphoresence in solvents besides compound dfppyPtP^O;
yet, its emittance was rather weak. As the number of N in the heteroaromatics
increased the emitting λmax blue shifted from 465 nm to 474 nm. However, the width
of the full-width-half-maximum (FWHM) was too wide which resulted in the
emittance of blue-green light.
We take dfPPyPtP^O and TriazoPyPtP^O as dophants to construct devices A and B,
and the followings are the results.
Device A: NPB(30 nm)/mCP:dfPPyPtPO(10%,30 nm)/BCP(10 nm)/Alq(30
nm)/LiF/Al; this device can achieve an external quantum efficiency(ηext) of 2.13%,
current efficiency(ηc) of 5.84 cd/A, maximum brightness(Lmax) of 6596 cd/m2, and
CIE coordinates of (0.17,0.45). Device B: NPB(30 nm)/mCP:TriazoPyPtP^O(10%,30
nm)/BCP(10 nm)/Alq(30 nm)/LiF/Al; this device can achieve an external quantum
efficiency(ηext) of 2.17%, current efficiency(ηc) of 6.10 cd/A, maximum
brightness(Lmax) of 4951 cd/m2, and CIE coordinates of(0.21,0.49).
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