期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 28, 页码 32154-32162出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c06851
关键词
AgNW; transparent electrode; patterning; UV photodetector; flexible electronics
资金
- National Research Foundation (NRF) of Korea [2018R1A2A1A05079100]
- Center for Advanced Soft Electronics [2012M3A6A5055728, 2016M1A2A2940914]
- National Research Foundation of Korea [2012M3A6A5055728] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Silver nanowire (AgNW) electrodes attract significant attention in flexible and transparent optoelectronic devices; however, high-resolution patterning of AgNW electrodes remains a considerable challenge. In this study, we have introduced a simple technique for high-resolution solution patterning of AgNW networks, based on simple filtration of AgNW solution on a patterned polyimide shadow mask. This solution process allows the smallest pattern size of AgNW electrodes, down to a width of 3.5 pm. In addition, we have demonstrated the potential of these patterned AgNW electrodes for applications in flexible optoelectronic devices, such as photodetectors. Specifically, for flexible and semitransparent UV photodetectors, AgNW electrodes are embedded in sputtered ZnO films to enhance the photocurrent by light scattering and trapping, which resulted in a significantly enhanced photocurrent (up to 800%) compared to devices based on AgNW electrodes mounted on top of ZnO films. In addition, our photodetector could be operated well under extremely bent conditions (bending radius of approximately 770 mu m) and provide excellent durability even after 500 bending cycles.
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