TITLE

Organic photodetector arrays with indium tin oxide electrodes patterned using directly transferred metal masks

AUTHOR(S)
Xu, Xin; Mihnev, Momchil; Taylor, Andre; Forrest, Stephen R.
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/26/2009, Vol. 94 Issue 4, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate the patterning of indium tin oxide (ITO) electrodes with submicron resolution onto both planar and hemispherical plastic surfaces using a process based on the direct transfer of a metal film etch mask via cold welding. Using this process, we fabricate an organic (copper phthalocyanine/C60) photodetector focal plane array on a hemispherical surface in an architecture that mimics the size and form of the human eye. The low absorption of the ITO anodes results in an increase in external quantum efficiency by up to 65% in the visible as compared with that of a previously demonstrated photodetector array with semitransparent Au anodes. The maximum photodetector detectivity is 1.25×1011 cm Hz1/2 W-1.
ACCESSION #
36434970

 

Related Articles

  • Single quantum dot nanowire photodetectors. van Kouwen, M. P.; van Weert, M. H. M.; Reimer, M. E.; Akopian, N.; Perinetti, U.; Algra, R. E.; Bakkers, E. P. A. M.; Kouwenhoven, L. P.; Zwiller, V. // Applied Physics Letters;9/13/2010, Vol. 97 Issue 11, p113108 

    We report InP nanowire photodetectors with a single InAsP quantum dot as light absorbing element. With excitation above the InP band gap, the nanowire photodetectors are efficient (quantum efficiency of 4%). Under resonant excitation of the quantum dot, the photocurrent amplitude depends on the...

  • Performance Optimization of InSb Infrared Focal-Plane Arrays with Diffractive Microlenses. Bai, Jie; Hu, Weida; Guo, Nan; Lei, Wen; Lv, Yanqiu; Zhang, Xiaolei; Si, Junjie; Chen, Xiaoshuang; Lu, Wei // Journal of Electronic Materials;Aug2014, Vol. 43 Issue 8, p2795 

    In this paper, diffractive microlens arrays are studied to concentrate incident light onto the effective photosensitive area of InSb infrared focal-plane arrays and thus enhance the quantum efficiency and reduce the crosstalk. Four designs of diffractive microlenses are investigated by a...

  • Guided-mode resonator for thin InGaAs P-i-N short-wave infrared photo-diode. Verdun, Michaël; Portier, Benjamin; Jaworowicz, Katarzyna; Jaeck, Julien; Lelarge, François; Guilet, Stéphane; Dupuis, Christophe; Haïdar, Riad; Pardo, Fabrice; Pelouard, Jean-Luc // Applied Physics Letters;2/1/2016, Vol. 108 Issue 5, p1 

    We investigate a resonant photodiode transferred onto a gold mirror. This comprises a backside dielectric subwavelength periodic structure and an absorbing region as thin as 90 nm. Electro-optical characterizations of individual pixels featuring focal-plane array-compatible geometries are fully...

  • Spatially resolved study of quantum efficiency droop in InGaN light-emitting diodes. Lin, Yue; Zhang, Yong; Liu, Zhiqiang; Su, Liqin; Zhang, Jihong; Wei, Tongbo; Chen, Zhong // Applied Physics Letters;12/17/2012, Vol. 101 Issue 25, p252103 

    We investigate the spatial variation of the external quantum efficiency (EQE) of InGaN light-emitting diodes. Two different types of EQE droop are examined in one single device, offering unambiguous analyses on the underlying material physics without the complications of the processing...

  • Substrate removal for high quantum efficiency back side illuminated type-II InAs/GaSb photodetectors. Delaunay, Pierre-Yves; Nguyen, Binh Minh; Hofman, Darin; Razeghi, Manijeh // Applied Physics Letters;12/3/2007, Vol. 91 Issue 23, p231106 

    A substrate removal technique using an InAsSb etch stop layer improves by a factor of 2 the quantum efficiency of back side illuminated type-II InAs/GaSb superlattice photodetectors. After etching of the GaSb substrate with a CrO3 based solution, the quantum efficiency of the diodes presents...

  • Optimization of Microlenses for InSb Infrared Focal-Plane Arrays. Guo, N.; Hu, W.; Chen, X.; Meng, C.; Lv, Y.; Lu, W. // Journal of Electronic Materials;Aug2011, Vol. 40 Issue 8, p1647 

    In this work, three designs of spherical refractive microlenses have been investigated. The simulation results show that the response and crosstalk of photodetectors with silicon microlenses are one order of magnitude better than for photodetectors with InSb microlenses or silicon thin-film...

  • Star-configured carbazole as an efficient near-ultraviolet emitter and hole-transporting material for organic light-emitting devices. Hai-Feng Xiang; Zong-Xiang Xu; Roy, V. A. L.; Chi-Ming Che; Lai, P. T.; Peng-Ju Zeng; Fang-Fang Niu; Ya-Wei Liu; Wei-Qun Tang; Cai-Jie He; Han-Ben Niu // Applied Physics Letters;2/18/2008, Vol. 92 Issue 7, p073305 

    A novel organic material, 9-methyl-1,3,6,8-tetraphenyl-carbazole (MTPC-Me), for use in organic electroluminescent devices has been developed. This star-configured carbazole gives a strong near-ultraviolet (n-UV) emission (λmax=389 nm) with a high emission quantum efficiency of 47% and a...

  • Plasmon-based photosensors comprising a very thin semiconducting region. Le Perchec, J.; Desieres, Y.; de Lamaestre, R. Espiau // Applied Physics Letters;5/4/2009, Vol. 94 Issue 18, p181104 

    We theoretically investigate an elementary subwavelength plasmonic sensor comprising a very thin active region. High quantum efficiency (QE), broad spectral band and nearly no sensitivity to the incidence angle and polarization can be achieved. We particularly discuss different examples based on...

  • High efficiency organic multilayer photodetectors based on singlet exciton fission. Lee, J.; Jadhav, P.; Baldo, M. A. // Applied Physics Letters;7/20/2009, Vol. 95 Issue 3, p033301 

    We employ an exciton fission process that converts one singlet exciton into two triplet excitons to increase the quantum efficiency of an organic multilayer photodetector beyond 100%. The photodetector incorporates ultrathin alternating donor-acceptor layers of pentacene and C60, respectively....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics