MRS Meetings and Events


EN05.10.24 2023 MRS Fall Meeting

Thick and Efficient Perovskite Solar Cells Enabled by Fast Co-Evaporation

When and Where

Nov 29, 2023
8:00pm - 10:00pm

Hynes, Level 1, Hall A



Manuel Piot1,Javier Sebastien1,Nathan Rodkey1,Kassio Zanoni1,Michele Sessolo1,Henk Bolink1

Institut de Ciència Molecular (ICMol)1


Manuel Piot1,Javier Sebastien1,Nathan Rodkey1,Kassio Zanoni1,Michele Sessolo1,Henk Bolink1

Institut de Ciència Molecular (ICMol)1
Conformal deposition of perovskite on textured silicon for perovskite/silicon tandem solar cells remains challenging using the widely-used solution spin-coating route. In contrast, perovskite thermal evaporation allows highly-controlled thin film deposition, ensuring conformality on large areas, regardless on the surface texture. To take advantage of the full photocurrent generating capabilities of the perovskite front cell, rather thick films are required. Currently, most perovskites are sublimed in a single approach by co-sublimation of the precursors. This deposition technique is usually done under high vacuum and the deposition rates of each precursor are monitored using quartz crystal microbalances (QCMs). However, due to the slow deposition rates (&lt; 1 Å/s) it is challenging to deposit sufficiently thick perovskite films that are required for highly efficient perovskite/silicon tandem devices.<br/>Herein, we explore the co-evaporation of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPI) perovskite using faster deposition rates (&gt; 2 Å/s), by simultaneously subliming CH<sub>3</sub>NH<sub>3</sub>I and PbI<sub>2</sub>. These rates are deduced by scaling up linearly the initial speed by a factor of up to 8 times, leading to quick and reproducible evaporation processes. Moving to faster deposition speeds, a change in crystallite orientation is observed by XRD and GIWAXS, showing a preferential growth along the (202) family of planes, as opposed to the (110) orientation.<br/>Thanks to these faster deposition speeds, 1 µm-thick MAPI films can be deposited in a short amount of time. This allows a noticeable J<sub>sc</sub> gain in planar glass based single junction solar cells (~0.8 mA), due to an enhanced absorption of the infrared light, as revealed by EQE. On the other hand, the FF drops to lower values, possibly due to a diffusion length problem.


physical vapor deposition (PVD)

Symposium Organizers

Marina Leite, University of California, Davis
Lina Quan, Virginia Institute of Technology
Samuel Stranks, University of Cambridge
Ni Zhao, Chinese University of Hong Kong

Symposium Support

Enli Technology Co., LTD

APL Energy | AIP Publishing

Session Chairs

So Min Park
Lina Quan

In this Session

Interstitial Defect Relaxation DFT Study of Lead Halide Perovskites

Water-Assisted Morphology and Crystal Engineering of Hybrid Organic-Inorganic Halide Perovskite: Implications for Optoelectronic Properties

Self-Leveling Inks for Engineering Large Area Uniformity in High-Performance Flexography-Printed Perovskite Solar Cells

Towards Highly Efficient Fully Evaporated Perovskite/Si Tandem Solar Cells

The Outstanding Role of Dielectricity in Hybrid Solar Cell Absorbers

Controlling The Crystallization of Pure Bromide Quasi-2-Dimensional Perovskite Crystals for High Efficiency Pure-Blue Light-Emitting Diodes

Compositional Engineering of Single-Crystal Perovskite for Highly Efficient Photovoltaics

Atomistic Origin of Transparent Absorption Spectra of Halide Perovskites

Exploring a Novel Family of Conjugated Polymers for High Efficiency and Thermally Stable Perovskite Solar Cells

Charge Transfer Doping of Ruddlesden–Popper Metal–Halide Perovskites via Bulk Incorporation of Organic Molecular Dopants

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Publishing Alliance

MRS publishes with Springer Nature