In:
ChemPhysChem, Wiley, Vol. 17, No. 1 ( 2016-01), p. 112-118
Abstract:
Moisture is shown to activate the reaction between PbI 2 and methylammonium halides. In addition, two activating mechanisms are proposed for the formation of CH 3 NH 3 PbI 3 and CH 3 NH 3 PbI 3− x Cl x films from a series of carefully controlled experiments. When these rapidly formed perovskite films are directly fabricated into the devices, poor photovoltaic properties are found, due to heavy surface charge recombination. However, the cell performance can be significantly enhanced to 13.63 % and to over 12 % in the steady state for CH 3 NH 3 PbI 3 and to 15.50 % and over 14 % in the steady state for CH 3 NH 3 PbI 3− x Cl x , if the rapidly formed perovskite film is annealed. Thus, it is believed that moisture (below 60 % RH) is not a problem for the fabrication of highly efficient perovskite solar cells.
Type of Medium:
Online Resource
ISSN:
1439-4235
,
1439-7641
DOI:
10.1002/cphc.201500844
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
2025223-7
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