The sample generates the capacitance transient, which is then measured by the instrument. A temperature sweep is applied while employing a lock-in technique. Subsequently, the instrument filters out ...

As a promising photovoltaic material, metal halide perovskite yields high efficiency in solar cells. However, the deep-level traps of minority carriers at the surface of the p-i-n perovskite solar ...

Researchers have revealed more details about omnidirectional photoluminescence (ODPL) spectroscopy - a method for probing semiconducting crystals with light to detect defects and impurities. Tohoku ...

(a) A scheme of temperature variable ODPL spectroscopy. The spectra of ODPL and SPL as well as r (ODPL intensity divided by SPL intensity) measured at (b) T = 300 K and (c) T = 12 K. (Image: Kazunobu ...