Issue 12, 2016

Vapor and healing treatment for CH3NH3PbI3−xClx films toward large-area perovskite solar cells

Abstract

Hybrid methyl-ammonium lead trihalide perovskites are promising low-cost materials for use in solar cells and other optoelectronic applications. With a certified photovoltaic conversion efficiency record of 20.1%, scale-up for commercial purposes is already underway. However, preparation of large-area perovskite films remains a challenge, and films of perovskites on large electrodes suffer from non-uniform performance. Thus, production and characterization of the lateral uniformity of large-area films is a crucial step towards scale-up of devices. In this paper, we present a reproducible method for improving the lateral uniformity and performance of large-area perovskite solar cells (32 cm2). The method is based on methyl-ammonium iodide (MAI) vapor treatment as a new step in the sequential deposition of perovskite films. Following the MAI vapor treatment, we used high throughput techniques to map the photovoltaic performance throughout the large-area device. The lateral uniformity and performance of all photovoltaic parameters (Voc, Jsc, Fill Factor, Photo-conversion efficiency) increased, with an overall improved photo-conversion efficiency of ∼100% following a vapor treatment at 140 °C. Based on XRD and photoluminescence measurements, We propose that the MAI treatment promotes a “healing effect” to the perovskite film which increases the lateral uniformity across the large-area solar cell. Thus, the straightforward MAI vapor treatment is highly beneficial for large scale commercialization of perovskite solar cells, regardless of the specific deposition method.

Graphical abstract: Vapor and healing treatment for CH3NH3PbI3−xClx films toward large-area perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
05 ธ.ค. 2558
Accepted
29 ธ.ค. 2558
First published
12 ม.ค. 2559

Nanoscale, 2016,8, 6386-6392

Author version available

Vapor and healing treatment for CH3NH3PbI3−xClx films toward large-area perovskite solar cells

L. Gouda, R. Gottesman, S. Tirosh, E. Haltzi, J. Hu, A. Ginsburg, D. A. Keller, Y. Bouhadana and A. Zaban, Nanoscale, 2016, 8, 6386 DOI: 10.1039/C5NR08658B

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