Abstract

A new type of organic visible-blind UV-PDs is demonstrated by utilizing phosphorescent material Ir(III)bis[(4,6-difluorophenyl)-pyridinato-N, ${\mathrm{C}}^{2^{\prime }}$] picolinate (FIrpic) as the electron donor and [6,6]-phenyl-C-61-butyricacidmethylester (PCBM) as the electron accepter, respectively. The peak responsivity of the organic UV-PDs is as high as $140\mathrm{mA}/\mathrm{W}$, corresponding to an external quantum efficiency of about 48%, under 365 nm UV light with an intensity of $0.018\mathrm{mW}/{\mathrm{cm}}^2$. The distinct photoluminescence quenching of FIrpic is obtained by doping PCBM. The organic UV-PDs provide visible-blind performance with the strong photocurrent response in the UV-A region, the rise and fall times of less than one second, and linear response within the incident light-intensity range from 0.018 to $20\mathrm{mW}/{\mathrm{cm}}^2$.

© 2013 Optical Society of America

High response organic deep ultraviolet photodetector with PEDOT:PSS anode

Lu Zhu, Qian Dai, Zuo-Fu Hu, Xi-Qing Zhang, and Yong-Sheng Wang
Opt. Lett. 36(10) 1821-1823 (2011)

Highly efficient single-layer phosphorescent white organic light-emitting diodes using a spirofluorene-based host material

Soon Ok Jeon, Kyoung Soo Yook, Chul Woong Joo, and Jun Yeob Lee
Opt. Lett. 34(4) 407-409 (2009)

Hybrid light-emitting devices based on phosphorescent platinum(II) complex sensitized CdSe/ZnS quantum dots

Gang Cheng, Wei Lu, Yong Chen, and Chi-Ming Che
Opt. Lett. 37(6) 1109-1111 (2012)

Solution processed organic photodetector utilizing an interdiffused polymer/fullerene bilayer

Shafidah Shafian, Yoonhee Jang, and Kyungkon Kim
Opt. Express 23(15) A936-A946 (2015)

Broadband charge transfer dynamics in P3HT:PCBM blended film

Sheng Hsiung Chang, Chien-Hung Chiang, Hsin-Ming Cheng, Chao-Yi Tai, and Chun-Guey Wu
Opt. Lett. 38(24) 5342-5345 (2013)