Journal
MATERIALS RESEARCH BULLETIN
Volume 97, Issue -, Pages 244-250Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2017.08.046
Keywords
Flexible; Transparent; Photodetector; Silver nanowire networks; Schottky junction
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Funding
- National Research Foundation of Korea by the Ministry of Education [NRF-2015R1D1A1A01059165]
- NRF by the Ministry of Science and ICT [NRF-2015H1D3A1066311]
- National Research Foundation of Korea [2015H1D3A1066311] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Transparent and flexible photodetector was realized by effective interfacial design methods. Silver nanowires (AgNWs) were networked onto a colorless polyimide (cPI) substrate to ensure the transparent conductive front electrode of Ni/ZnO/AgNWs/cPI photodetector. Under UV illumination, remarkable performances were obtained for quick responses (rise time = 0.987 ms and fall time = 2.49 ms) and ultrahigh responsivity (1.46 x 10(4) A/W). Due to the merit of AgNW-networks, an enhanced interfacial surface was established for the ZnO film, simultaneously providing efficiently short pathways for the collection of photo-generated carriers. The AgNWs-embedding Schottky photodetector gave an excellent noise equivalent power of 4.38 x 10(-15) W/Hz(1/2), which is suitable for femtowatt-level photodetection. We demonstrate that the active adoption of metallic nanowires would provide high-degree of freedom for high-performing photoelectric devices with satisfying flexible and transparent features.
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