ZnO Nanoparticle Printing for UV Sensor Fabrication
Hendrik Joost van Ginkel (TU Delft - Electronic Components, Technology and Materials)
Mattia Orvietani (TU Delft - Electronic Components, Technology and Materials)
Joost Romijn (TU Delft - Microelectronics)
Guo Qi Z Zhang (TU Delft - Electronic Components, Technology and Materials)
Sten Vollebregt (TU Delft - Electronic Components, Technology and Materials)
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Abstract
In this work, a novel microfabrication-compatible production process is demonstrated and used to fabricate UV photoresistors made from ZnO nanoparticles. It comprises a simple room-temperature production method for synthesizing and direct-writing nanoparticles. The method can be used on a wide range of surfaces and print a wide range of materials. Here, it is used to synthesize a ZnO photoresistor for the first time. The sensor shows a two orders of magnitude lower resistance under UV-C exposure compared to darkness. The low cost and simplicity of this synthesis method enables cheap integration of UV-C sensors for human exposure monitoring or UV-output monitoring of light sources.