A moisture stable, hysteresis-free semi-transparent perovskite solar cell with single wall carbon nanotubes

In this work, comprehensive technological computer aided design (TCAD) analysis has been done for Phenyl-C
₆₁
-butyric acid methyl ester (PCBM) based hysteresisfree perovskite cell. Further, single-walled carbon nanotubes (SWCNTs) is introduced between Spiro-OMeTAD, hole transport layer (HTL) to protect the perovskite layer from ambient humidity as well as to offer better minority charge carrier extraction. The introduction of SWCNTs leads to an increase in the power conversion efficiency (PCE) from 14.2% to 14.7%, due to the increase in the short circuit current (J
_SC
) from 17.3 mA.cm
^-2
to 17.8 mA.cm
^-2
. Further impact of the bandgap of SWCNT on the performance of the device is studied and hence an optimum device is achieved. All simulations are performed using SILVACO ATLAS device simulator.