Intrinsically Stable and Scalable Perovskite Solar Cells

Interdisciplinary Areas: Power, Energy, and the Environment

Project Description

In the past few years, perovskite solar cell technology has made significant progresses with power conversion efficiency of 25% and operational lifetime over 1000 hours in lab scale. However, the real applications of these devices require new breakthroughs in device performance, large-scale manufacturing, and improved stability. Among these, stability and degradation are the most significant challenges for perovskite technologies. In this project, we propose a new paradigm to develop intrinsically robust perovskite active layers through the incorporation of multi-functional semiconducting conjugated ligands. We will demonstrate that semiconducting ligands can spontaneously organize within the active layer to passivate defects and restrict halide diffusion, resulting in dramatic improvements in moisture and oxygen tolerance, reduced phase segregation, and increased thermal stability. Combining a team with expertise spanning the gamut of materials synthesis, computational materials design, and device engineering, we propose to develop a suite of multi-functional semiconducting ligands capable of improving the intrinsic stability perovskite materials while preserving and even enhancing their electronic properties. Through this strategy, we aim to achieve over 25% cell efficiency with operational stability over 20 years (under accelerated tests) and 20% mini-module efficiency (100×100 mm2).

Start Date


Postdoc Qualifications

PhD in chemistry, physics, materials science, chemical engineering, electrical engineering or related fields. Hand-on experience with materials synthesis, thin film electronic device fabrication and characterization, and/or molecular modeling.


Letian Dou (
Jianguo Mei (
Brett Savoie (
Ke Ma, Harindi R. Atapattu, Qiuchen Zhao, Yao Gao, Blake P. Finkenauer, Kang Wang, Ke Chen, So Min Park, Aidan H. Coffey, Chenhui Zhu, Libai Huang, Kenneth R. Graham, Jianguo Mei*, Letian Dou*; "Multi-Functional Conjugated Ligand Engineering for Stable and Efficient Perovskite Solar Cells." Advanced Materials 2021, in press.
Ke Ma, Sheng-Ning Hsu, Yao Gao, Zitang Wei, Linrui Jin, Blake P. Finkenauer, Libai Huang, Bryan W. Boudouris,* Jianguo Mei,* Letian Dou*; "Organic Cation Engineering for Vertical Charge Transport in Lead-Free Perovskite Quantum Wells", Small Science 2021, DOI:10.1002/smsc.202000024
Blake P. Finkenauer, Yao Gao, Xiaokang Wang, Yue Tian, Zitang Wei, Chenhui Zhu, David J. Rokke, Linrui Jin, Lei Meng, Yang Yang, Libai Huang, Kejie Zhao, Letian Dou*; "Mechanically Robust and Self-Healable Perovskite Solar Cells", Cell Reports Physical Science 2021, 2, 100320
Aihui Liang, Kang Wang, Yao Gao, Blake P. Finkenauer, Chenhui Zhu, Linrui Jin, Libai Huang, Letian Dou*; "Highly Efficient Halide Perovskite Light-Emitting Diodes via Molecular Passivation", Angewandte Chemie International Edition 2021, 60, 8337-8343
Enzheng Shi, Biao Yuan, Stephen B. Shiring, Yao Gao, Akriti, Yunfan Guo, Cong Su, Minliang Lai, Peidong Yang, Jing Kong, Brett M. Savoie*, Yi Yu*, Letian Dou*; "Two-dimensional halide perovskite lateral epitaxial heterostructures", Nature 2020, 580, 614-620.