Details

Autor(en) / Beteiligte

• Zhao, J. J
• Wang, P
• Liu, Z. H
• Wei, L. Y
• Yang, Z
• Chen, H. R
• Fang, X. Q
• Liu, X. L
• Mai, Y. H

Titel

Controlled reaction for improved CH3NH3PbI3 transition in perovskite solar cells

Ist Teil von

• Dalton transactions : an international journal of inorganic chemistry, 2015-10, Vol.44 (4), p.17841-17849

Ort / Verlag

England

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Hybrid halide perovskites represent one of the most promising solutions toward the fabrication of all solid nanostructured solar cells, with improved efficiency and long-term stability. This article aims at investigating the properties of CH 3 NH 3 PbI 3 with controlled loading time in CH 3 NH 3 I solution via a two-step sequential deposition and correlating them with their photovoltaic performances. It is found that the optimum PCE of the loading time in the CH 3 NH 3 I solution is possible only at a relatively short time (10 min). Prolonging the loading time will degrade the perovskite film, and deteriorate the device performance by introducing a large amount of excessive defects and recombination. However, even if the material band gap remains substantially unchanged, a suitable loading time can dramatically improve the charge transport within the perovskite layer, exhibiting the out-standing performances of meso-superstructured solar cells. It is found that the optimum PCE of the loading time in the CH 3 NH 3 I solution is possible only at a relatively short time. A suitable loading time dramatically improves the charge transport within the perovskite layer, explaining the outstanding performances of meso-superstructured solar cells based on this loading time.