Self-powered p-NiO/n-ZnO heterojunction ultraviolet photodetectors fabricated on plastic substrates | Zendy

M. Hasan | Zendy; Ting Xie | Zendy; Sara C. Barron | Zendy; Guannan Liu | Zendy; Nhan V. Nguyen | Zendy; Abhishek Motayed | Zendy; Mulpuri V. Rao | Zendy; Ratan Debnath | Zendy

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Self-powered p-NiO/n-ZnO heterojunction ultraviolet photodetectors fabricated on plastic substrates

Author(s) -

M. Hasan,

Ting Xie,

Sara C. Barron,

Guannan Liu,

Nhan V. Nguyen,

Abhishek Motayed,

Mulpuri V. Rao,

Ratan Debnath

Publication year - 2015

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4932194

Subject(s) - materials science , non blocking i/o , ultraviolet , heterojunction , photodetector , optoelectronics , polyethylene terephthalate , sputtering , indium tin oxide , sputter deposition , indium , tin oxide , quantum efficiency , thin film , doping , nanotechnology , composite material , biochemistry , chemistry , catalysis

A self-powered ultraviolet (UV) photodetector (PD) based on p-NiO and n-ZnO was fabricated using low-temperature sputtering technique on indium doped tin oxide (ITO) coated plastic polyethylene terephthalate (PET) substrates. The p-n heterojunction showed very fast temporal photoresponse with excellent quantum efficiency of over 63% under UV illumination at an applied reverse bias of 1.2 V. The engineered ultrathin Ti/Au top metal contacts and UV transparent PET/ITO substrates allowed the PDs to be illuminated through either front or back side. Morphology, structural, chemical and optical properties of sputtered NiO and ZnO films were also investigated.

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