Electrical properties and J-V modeling of perovskite (CH3NH3PbI3) solar cells after external thermal exposure

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“…The estimated rise and fall times correspond to the time from 10 to 90% and from 90 to 10% of the saturated peak value, respectively. − The on/off current ratios for both the bottom- and top-side illuminations exceed 10 4 . This is even higher than the J d / J SC obtained from the J – V curves using a solar simulator with G1.5AM irradiation at 100 mW cm –2 (see Figure ), which could be due to better operation of the device at lower temperatures as losses associated with thermal scattering of photogenerated charge carriers diminish in the absence of heating . The estimated rise and fall times for top- and bottom-side illumination are 3.67 s and 41 ms, respectively, whereas for top-side illumination, they are 3.99 s and 39 ms, respectively.…”

Degradation Analysis of Triple-Cation Perovskite Solar Cells by Electrochemical Impedance Spectroscopy

“…10,1110,11 CH 3 NH 3 PbI 3 (MAPI) is the most studied PVSK compound for being one of the first to be used in sensitized solar cells, 8 later introduced in single-junction solar cells by Snaith et al 12 Being a hybrid material (organic−inorganic), the principal problem in these solar cells has been the stability by degradation. 13,14 MAPI is a hybrid material that has a structural phase transition at 55 °C. 6 MAPI stability is limited and affected by different parameters such as humidity, temperature, and UV light.…”

“…Halide perovskites (PVSKs) in solar cells have a general structure of ABX 3 , where A represents an organic or inorganic monovalent cation such as cesium (Cs + ), methylammonium (MA + ), or formamidinium (FA + ); B is a divalent metal such as Pb 2+ or Sn 2+ ; and X is a halide such as I – , Br – , or Cl – . , , CH 3 NH 3 PbI 3 (MAPI) is the most studied PVSK compound for being one of the first to be used in sensitized solar cells, later introduced in single-junction solar cells by Snaith et al Being a hybrid material (organic–inorganic), the principal problem in these solar cells has been the stability by degradation. , MAPI is a hybrid material that has a structural phase transition at 55 °C . MAPI stability is limited and affected by different parameters such as humidity, temperature, and UV light. − …”

“…Electrochemical impedance spectroscopy (EIS) is a well-known technique for characterizing electrochemical processes in different types of solar cell technologies. ,− EIS captures the current response to small amplitude modulating the voltage stimulus. To interpret the data generated by this method, an equivalent circuit comprising resistive and capacitive response elements is used for fitting.…”

“…Electrochemical impedance spectroscopy (EIS) is a well-known technique for characterizing electrochemical processes in different types of solar cell technologies 14,[32][33][34] . EIS captures the current response to small amplitude modulating voltage stimulus.…”