Identifying the charge generation dynamics in a Cs+-based triple cation mixed perovskite solar cells

Salado, M and Kokal, R K and Calio, L and Kazim, S and M, Deepa and Ahmad, S (2017) Identifying the charge generation dynamics in a Cs+-based triple cation mixed perovskite solar cells. Physical Chemistry Chemical Physics, 19 (34). pp. 22905-22914. ISSN 1463-9076

Full text not available from this repository. (Request a copy)


Triple cation based perovskite solar cells offers enhanced moisture tolerance and stability compare to mixed perovskites. A slight substitution of methyl ammonium or formamidinium cation by cesium (Cs+), was also reported to eliminate halide segregation due to its smaller size. To elucidate the device kinetics and understand the role of Cs, we undertook different mode of scanning probe microscopy and electrochemical impedance spectroscopy (EIS) experiments. Kelvin probe force microscopy revealed that the incorporation of Cs cation increases the contact potential difference (CPD), this CPD further increases when Spiro-OMeTAD was used as a hole transport material. The current at nanoscale level shows improvement with Cs inclusion and further enhancement by the Spiro-OMeTAD coating under illumination, which supports the high photocurrent density obtained from the cells. EIS demonstrates that in a triple cation environment, reduce carrier recombination at the TiO2 /perovskite interface was also obtained which in turn allow to acheive higher Voc value.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Subjects: Chemistry > Physical chemistry
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 07 Aug 2017 07:28
Last Modified: 14 Sep 2017 07:11
Publisher URL:
OA policy:
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 3458 Statistics for this ePrint Item