In this work, we explore the underlying reasons for scaling losses of perovskite solar cells, especially for the p-i-n configuration, and have successfully reduced this scaling loss to ~0.9%. With a comprehensive understanding of the underlying mechanisms, high-quality PSCs with a PCE of 20.3% for 2 cm2 devices and 19.8% for 6.8 cm2 mini-modules were obtained.

This study, which took place in JPCC, demonstrates the correlation between the Urbach energy of perovskite absorbers and open-circuit voltage deficiency at the solar cell level.

This paper, published in Materials Horizons, reviews the state-of-the-art recombination junction which has been used for perovskite-based tandems and explains the fundamental working principles behind it.

This study, which took place in Nature Energy, show that a lower bandgap perovskite than needed at standard test conditions is actually beneficial to perovskite/silicon tandem cells in the field.

This study, published in ACS Energy Letters, reports one of the highest PCE for single-junction devices fabricated by lost die coating as well as showing the first example of slot-die coated perovskite/silicon tandems on textured interfaces.

Areej's in situ plasma approach offers excellent thickness control and superior structural integrity upon thermal annealing at 1000 °C. This study, which gives implied open‐circuit voltage exceeding 700 mV published in Advanced Materials Interfaces.

This study demonstrates improved performance and stability via in-house synthesized organic cyano‐based π‐conjugated molecules. Kai Wang's this passivation study came out in Advanced Functional Materials.

This study, which came out in the recent issue of ACS Applied Materials & Interfaces, successfully demonstrates the Lewis-acid (TPFB) doping of the widely used spiro-OMeTAD hole transport materials for perovskite solar cells to. This dopant replaces the conventional LiTFSI/tBP doping. By doing so, the device stability is increased and processing is simplified.

This study, which develops a strategy to circumvent the problem of boron diffusion into the silicon, took place in the recent issue of Advanced Materials Interfaces. This study is the first publication KPV-LAB in the field of poly‐Si passivating contact solar cells.

This work, published in Solar RRL,  presents a detailed study of the photophysics of multiple‐cation mixed halide lead perovskites and develops a concise picture of the impact of cesium/rubidium incorporation on the photophysics and device performance.

This study, published in Joule, reports 23.9%-efficient 6-in silicon heterojunction solar cells with improved damp-heat-stability for aiming the mass production.

This study shows 28.2% lab-scale mechanically stacked perovskite/silicon tandem solar cells in collaboration with Sargent Group from the University of Toronto - published in Nature Communications

Growing perovskite on textured silicon - this report published in Science demonstrates the solution-processed perovskites on textured c-Si bottom cells in tandem configuration. Textured interfaces enable improved light coupling and efficient charge extraction and result in 25.7% certified monolithic tandem solar cells.

This study presents that polyethyleneimine (b-PEI), which is Lewis base polymer, performs as an efficient electron transport layer for c-Si solar cells.

In collaboration with Carolin M. Sutter-Fella from Lawrence Berkeley National Laboratory

This study demonstrates the potential usage of the spray deposited perovskite nanocrystal inks for perovskite/silicon tandem solar cells.