Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 20, 2018
Previous Article Next Article

Controlled surface decomposition derived passivation and energy-level alignment behaviors for high performance perovskite solar cells

Author affiliations

Abstract

Interface engineering is a crucial strategy to improve the performance of the perovskite solar cells. The introduction of excess PbI2 with simple mixing method is widely used, but unfortunately its underlying mechanism is still unclear. The main reason is the lack of direct evidence with precise control of the PbI2 distribution. Herein, a program-controlled pulsed H2O vapor exposure/purge method was developed to evenly generate thin PbI2 layer on the film surface. Based on this method, it was found that different PbI2 locations play a different effects on the photovoltaic performance of the perovskite solar cells. In the normal device structure, the performance improvement is owing to the passivation effect, while in the inverted device structure, the energy level alignment plays a more dominant role. The discoveries based on the PbI2 location controllable method are conducive to our new understanding of the traditional PbI2-rich system and thus can be a direction towards highly efficient perovskite solar cells.

Graphical abstract: Controlled surface decomposition derived passivation and energy-level alignment behaviors for high performance perovskite solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Mar 2018, accepted on 26 Apr 2018 and first published on 26 Apr 2018


Article type: Communication
DOI: 10.1039/C8TA02652A
Citation: J. Mater. Chem. A, 2018,6, 9397-9401

  •   Request permissions

    Controlled surface decomposition derived passivation and energy-level alignment behaviors for high performance perovskite solar cells

    Z. Li, C. Zhang, Z. Shao, Y. Fan, R. Liu, L. Wang and S. Pang, J. Mater. Chem. A, 2018, 6, 9397
    DOI: 10.1039/C8TA02652A

Search articles by author

Spotlight

Advertisements