Assessing the impact of ambient fabrication temperature on the performance of planar CH3NH3PbI3 perovskite solar cells

Zuzanna Molenda (1) , Sylvain Chambon (2) , Dario Bassani (3) , Lionel Hirsch (1)

1 IMS - Laboratoire de l'intégration, du matériau au système
2 LIMMS - Laboratory for Integrated Micro Mechatronics Systems
3 ISM - Institut des Sciences Moléculaires

The ambient fabrication temperature inside the glove box is found to play an important role in determining the overall power conversion efficiency in solar cells based on CH3NH3PbI3 (MAPI) hybrid organic-inorganic perovskites. We find that a variation of the ambient temperature of only 10°C during the fabrication process has a crucial impact on both the reproducibility and the efficiency of the devices. Atomic Force Microscopy, XRD, UV-Vis absorption and electroluminescence have been carried out to investigate the origin of this behavior. We conclude that the partial vapor pressure variation of the solvent impacts the crystallization process inducing an increase density of traps within the bandgap of the perovskite.

Domaines: Matériaux; Optique / photonique

Zuzanna Molenda, Sylvain Chambon, Dario Bassani, Lionel Hirsch. Assessing the impact of ambient fabrication temperature on the performance of planar CH3NH3PbI3 perovskite solar cells. European Journal of Inorganic Chemistry, 2021, 2021 (25), pp.2533-2538. ⟨10.1002/ejic.202100329⟩. ⟨hal-03348949⟩