Detecting and identifying reversible changes in perovskite solar cells by electrochemical impedance spectroscopy.

However, PSC usually exhibit a clear trend that Z DC becomes very large for operating points close to J SC and quite small close to V OC . 4 The EIS of PSC shows two main semicircles or arcs, one at high frequencies >10 kHz and one at low frequencies <100 Hz, plus potential additional features such as a mid-frequency semicircle or negative hooks or loops. 4,6,7,12–21 There is no general agreement on the interpretation of the two main features but there is a certain tendency towards a common explanation.

also in 19,460 other papers