Application of Experimentally Determined Acoustic Impedance Ratio for Homogeneous Co-Evaporation of Perovskite Absorbers

authored by

Raphael Niepelt, Sascha J. Wolter, Marta Tatarzyn, Marvin Diederich, Verena Steckenreiter, Tobias Wietler, Robby Peibst, Sarah Kajari-Schroder

Abstract

We present the co-evaporation of metal halide perovskite absorbers on wafer scale. We determine the acoustic impedance ratio Z and density \rho of methyl ammonium iodide and lead iodide. We use them for the deposition of perovskite absorbers on 6-inch-diameter silicon wafers. We evaluate the structural and optical conformity of the deposition with x-ray diffraction and spectral photoluminescence. We use a camerabased fluorescence detection system to prove the homogeneity of the luminescence intensity. With our evaporation parameters, we achieve a conformal absorber deposition of controllable thickness and stoichiometry. The lead iodide precursor fully transforms into perovskite during the deposition without any post-deposition annealing. The as-deposited layers show a homogeneous photoluminescence signal at 1.61 eV at room temperature.

Organisation(s)

Institute of Electronic Materials and Devices

External Organisation(s)

Institute for Solar Energy Research (ISFH)

Type

Conference contribution

Pages

508-511

No. of pages

4

Publication date

26.11.2018

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/PVSC.2018.8548309 (Access: Closed)