Stable perovskite solar cells using thiazolo [5,4-d]thiazole-core containing hole transporting material

A furan-bridged hole transporting material (HTM) is synthesized and characterized by spectroscopic techniques. The highest occupied molecular orbitals of the HTM are found to be in proper alignment with the energy levels of perovskite material. The HTM in combination with the hybrid methylammonium lead triiodide (MAPbI3) perovskite in an inverted configuration consisting of ITO (O2 plasma)/TP-FTzF-TP/CH3NH3PbI3/PC61BM/Au, exhibit an excellent power conversion efficiency of ~ 16.4%. The short-circuit current density of ~ 21.94 mA/cm2, VOC of ~ 1.04 V and FF of ~ 0.72 under 1 sun condition.92