The incident photon-to-current conversion efficiency (IPCE) was recorded using a photoelectric spectrometer (Instytut Fotonowy Sp. z o.o.) with a 150 W Xenon light source equipped with a monochromator, according to the equation: 𝐼𝑃𝐶𝐸(%) = 1240 𝐽 𝑝ℎ /(𝜆𝑃) × 100% where 𝐽 𝑝ℎ is the photocurrent density under monochromatic light, 𝑃 is the monochromatic light power density, λ is the irradiation wavelength.