Laser engraving method to fabricate iodide and bromide based perovskite photosensors

Fatemeh Khorramshahi; Navid Ghazizadeh; Ioannis Kymissis; Arash Takshi

doi:10.1117/12.2568258

21 August 2020 Laser engraving method to fabricate iodide and bromide based perovskite photosensors

Fatemeh Khorramshahi, Navid Ghazizadeh, Ioannis Kymissis, Arash Takshi

Proceedings Volume 11475, Organic and Hybrid Sensors and Bioelectronics XIII; 114750L (2020) https://doi.org/10.1117/12.2568258
Event: SPIE Organic Photonics + Electronics, 2020, Online Only

Abstract

The bandgap tunability in methylammonium (MA) lead halide perovskites has motivated us to design a photoresistor array made of MAPbI₃, MAPbBr_1.5I_1.5, and MAPbBr₃. To pattern devices on the same substrate, a novel method of laser engraving the substrate was employed. In this method, first, an indium tin oxide (ITO) coated plastic substrate was laser engraved to make microchannels with a width of 50-100 µm. Capillary motion force was used to fill each channel with a different solution containing the perovskite precursors. The current-voltage characteristics of each sensor were studied under dark and light conditions. Light-emitting diodes with different wavelengths were used to study the response of each sensor to monochromic lights. The results are promising toward the fabrication of larger arrays of photosensors which potentially can be used for compact and integrated photospectrometers in lab-on-a-chip devices.

Conference Presentation

Citation Download Citation

Fatemeh Khorramshahi, Navid Ghazizadeh, Ioannis Kymissis, and Arash Takshi "Laser engraving method to fabricate iodide and bromide based perovskite photosensors", Proc. SPIE 11475, Organic and Hybrid Sensors and Bioelectronics XIII, 114750L (21 August 2020); https://doi.org/10.1117/12.2568258

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