Simulation of ferroelectric domains and grain boundaries in perovskite solar cells (Conference Presentation)

Matthias Auf der Maur; Daniele Rossi; Alessandro Pecchia; Aldo Di Carlo

doi:10.1117/12.2509360

8 March 2019 Simulation of ferroelectric domains and grain boundaries in perovskite solar cells (Conference Presentation)

Matthias Auf der Maur, Daniele Rossi, Alessandro Pecchia, Aldo Di Carlo

Author Affiliations +

Proceedings Volume 10913, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII; 1091306 (2019) https://doi.org/10.1117/12.2509360
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

This work is focused on understanding the role that ferroelectric domains in methylammonium lead halide perovskite (MAPbI3) on the one hand and grain boundaries on the other can have on the performance of solar cells built from this material. We study 2D and 3D systems considering different polarization domain patterns, inspired by measurement data, by proposing a polarization model based on the knowledge of the crystalline structure, symmetry considerations and electrical simulations. Structures with grains are constructed from SEM data. We compute charge carrier transport by solving a drift-diffusion model, in which the Poisson equation for the electrostatic potential calculation explicitly includes the polarization field. The effects of grain boundaries are simulated by considering different types of trap states at the boundaries. We show that the presence of polarization domains has a strong impact on charge separation, thus leading to a decrease of recombination losses and formation of current pathways at domain interfaces. Specifically, the decrease of Shockley-Read Hall recombination losses improves the open-circuit voltage, while the low resistivity current pathways lead to improved transport and an increase of the short-circuit current. The achieved results demonstrate that the presence of ordered ferroelectric domains, even with weak magnitude of polarization, can actually affect the performance of the solar cell in terms of enhanced power conversion. Moreover, from the comparison between our results and experimental IV characteristics of MAPb(I,Cl)3 devices we conclude that the polarization model proposed can effectively reproduce the solar cell operation.

Conference Presentation

Citation Download Citation

Matthias Auf der Maur, Daniele Rossi, Alessandro Pecchia, and Aldo Di Carlo "Simulation of ferroelectric domains and grain boundaries in perovskite solar cells (Conference Presentation)", Proc. SPIE 10913, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII, 1091306 (8 March 2019); https://doi.org/10.1117/12.2509360

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Solar cells

Polarization

Perovskite

3D modeling

Data modeling

Systems modeling

3D metrology

Show All Keywords

Keywords/Phrases

Search In:

Publication Years