TY - JOUR
T1 - Ultrapure Blue Phosphorescent Organic Light-Emitting Diodes Employing a Twisted Pt(II) Complex
AU - Chen, Yumeng
AU - Qian, Chunyue
AU - Qin, Ke
AU - Li, Hongbo
AU - Shi, Xiaobo
AU - Lu, Zhenzhong
AU - Ma, Huili
AU - Qin, Tianshi
AU - Hang, Xiao Chun
AU - Huang, Wei
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/11/10
Y1 - 2021/11/10
N2 - Described herein is a stable complex, Pt(mpzpyOczpy-mesi), embodying efficient, narrow blue emission. The highly twisted structure of the complex improves the stability and efficiency of photo- and electroluminescence by reducing the intermolecular interactions. The complex in solution shows high photoluminescence efficiency (>95%) and radiative decay rate (Kr = 2.9 × 105 s-1) with a narrow emission spectrum. The bottom-emitting phosphorescent device, BE1, exhibits durable deep blue emission with CIE coordinates of (0.145, 0.166) and 5.2 h of LT50 at an initial luminance of 685 cd/m2. Top-emitting devices, TE1 and TE2, achieve ultrapure blue color with CIEx,y values of (0.141, 0.068) and (0.140, 0.071), respectively. TE4 shows high brightness of 3405 cd m-2 at 50 mA m-2, EQE of 10.2% at 1000 cd/m2, and almost negligible color deviation around (0.135, 0.096) at viewing angles of 0°-60°.
AB - Described herein is a stable complex, Pt(mpzpyOczpy-mesi), embodying efficient, narrow blue emission. The highly twisted structure of the complex improves the stability and efficiency of photo- and electroluminescence by reducing the intermolecular interactions. The complex in solution shows high photoluminescence efficiency (>95%) and radiative decay rate (Kr = 2.9 × 105 s-1) with a narrow emission spectrum. The bottom-emitting phosphorescent device, BE1, exhibits durable deep blue emission with CIE coordinates of (0.145, 0.166) and 5.2 h of LT50 at an initial luminance of 685 cd/m2. Top-emitting devices, TE1 and TE2, achieve ultrapure blue color with CIEx,y values of (0.141, 0.068) and (0.140, 0.071), respectively. TE4 shows high brightness of 3405 cd m-2 at 50 mA m-2, EQE of 10.2% at 1000 cd/m2, and almost negligible color deviation around (0.135, 0.096) at viewing angles of 0°-60°.
KW - blue emission
KW - phosphorescent OLEDs
KW - tetradentate ligand
KW - top-emitting device
KW - twisted Pt(II) complex
UR - http://www.scopus.com/inward/record.url?scp=85118969848&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c13843
DO - 10.1021/acsami.1c13843
M3 - 文章
C2 - 34705419
AN - SCOPUS:85118969848
SN - 1944-8244
VL - 13
SP - 52833
EP - 52839
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 44
ER -