Fig. 2: Antireflection coating perovskite film optimization on germanium at a telecommunication wavelength of 1550 nm. | Light: Science & Applications

Fig. 2: Antireflection coating perovskite film optimization on germanium at a telecommunication wavelength of 1550 nm.

From: Germanium/perovskite heterostructure for high-performance and broadband photodetector from visible to infrared telecommunication band

Fig. 2: Antireflection coating perovskite film optimization on germanium at a telecommunication wavelength of 1550 nm.

a Reflection model of incident IR light from both interfaces of the device. b Simulation of the optical field distribution for the device with 0, 100, 150, and 300 nm perovskite AR-coated layer. c The variation in reflectance with the perovskite thickness at a wavelength of 1550 nm. d Iph-V curve comparison for the obtained photodetectors for different perovskite AR coating thicknesses.

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