Issue 17, 2015

Three-step sequential solution deposition of PbI2-free CH3NH3PbI3 perovskite

Abstract

We demonstrate a three-step sequential solution process to prepare PbI2-free CH3NH3PbI3 perovskite films. In this three-step method, a thermally unstable stoichiometric PbI2·CH3NH3Cl precursor film is first deposited on the mesoporous TiO2 substrate, followed by thermal decomposition to form PbI2, which is finally converted into CH3NH3PbI3 by dipping in a regular isopropanol solution of CH3NH3I at room temperature. In comparison to the two-step approach using similar processing conditions, the three-step method enables the formation of the PbI2 film through the thermal decomposition of the PbI2·CH3NH3Cl precursor film. This facilitates a rapid conversion of PbI2 to CH3NH3PbI3 without any traceable residue PbI2 in the final conversion step, leading to an improved device performance.

Graphical abstract: Three-step sequential solution deposition of PbI2-free CH3NH3PbI3 perovskite

Article information

Article type
Communication
Submitted
09 10月 2014
Accepted
25 11月 2014
First published
26 11月 2014

J. Mater. Chem. A, 2015,3, 9086-9091

Author version available

Three-step sequential solution deposition of PbI2-free CH3NH3PbI3 perovskite

Y. Zhao and K. Zhu, J. Mater. Chem. A, 2015, 3, 9086 DOI: 10.1039/C4TA05384B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements