2D Printed Plasmonic Nanoparticle Array Incorporated Formamidinium-Based High-Performance Self-Biased Perovskite...

Area of Science:

• Materials Science
• Nanotechnology
• Optoelectronics

Background:

• Organic/inorganic photodetectors (PDs) performance can be improved using noble metal nanoparticles.
• Formamidinium-based perovskite (Pe) materials offer potential for advanced PD applications.

Purpose of the Study:

• To enhance the performance of Formamidinium-based perovskite photodetectors (PDs) by incorporating plasmonic silver nanoparticles (Ag NPs).
• To investigate the use of a novel 2D printing technique for incorporating Ag NPs into perovskite PDs.

Main Methods:

• Fabrication of perovskite photodetectors with integrated arrays of plasmonic silver nanoparticles (Ag NPs) using a 2D printing technique.
• Characterization of the photodetector performance, including responsivity, detectivity, and on-off ratio, under varying conditions.

Main Results:

• The incorporation of Ag NPs significantly improved PD performance, attributed to enhanced light absorption, hot electron generation, and charge transport.
• The printed plasmon-enhanced PD achieved a peak responsivity of 1.03 A/W and detectivity of 3.7 × 10^12 Jones at 5 V.
• The hybrid device demonstrated self-biased photovoltaic characteristics with a peak responsivity of 15 mA/W and detectivity of 2.15 × 10^11 Jones at zero bias.

Conclusions:

• A cost-effective, non-vacuum, room-temperature 2D printing method was developed for incorporating plasmonic NPs.
• The developed plasmon-enhanced perovskite PD exhibits exceptional performance, paving the way for low-cost, high-performance photodetector applications.