High-performing flexible and transparent photodetector by using silver nanowire-networks

• Published in: Materials research bulletin Vol. 97; pp. 244 - 250
• Main Authors: Patel, Dipal B., Patel, Malkeshkumar, Chauhan, Khushbu R., Kim, Joondong, Oh, Min Suk, Kim, Jong-Woong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2018
• Subjects: Flexible; Photodetector; Schottky junction; Silver nanowire networks; Transparent; Schottky junction; Flexible; Transparent; Silver nanowire networks; Photodetector
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2017.08.046

[Display omitted] •Flexible and transparent Ni/ZnO/AgNWs/cPI photodetector was achieved.•AgNW-networks provide the enhanced interfacial surface for effective charge collection.•Ultrahigh responsivity (1.46×104A/W) by using AgNW-networked photodetector. 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=0.987ms and fall time=2.49ms) and ultrahigh responsivity (1.46×104A/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 4.38×10−15W/Hz1/2, 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.