Keith Gregory Brooks

Cette personne n’est plus à l’EPFL

Publications associées (20)

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Ultraviolet Filtration Passivator for Stable High-Efficiency Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang, Keith Gregory Brooks

Although the published values of power conversion efficiency (PCE) have increased continuously in recent years for perovskite solar cells (PSCs), improvements in the stability and performance of PSCs with conventional TiO2 or SnO2 electron transport layers ...

AMER CHEMICAL SOC2022

Area-Scalable Zn2SnO4 Electron Transport Layer for Highly Efficient and Stable Perovskite Solar Modules

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Jianxing Xia, Yi Zhang, Hiroyuki Kanda, Keith Gregory Brooks

The development of a scalable chemical bath deposition (CBD) process facilitates the realization of electrontransporting layers (ETLs) for large-area perovskite solar modules (PSMs). Herein, a method to prepare a uniform and scalable thick Zn2SnO4 ETL by C ...

AMER CHEMICAL SOC2022

High-efficiency perovskite photovoltaic modules achieved via cesium doping

Mohammad Khaja Nazeeruddin, Andreas Züttel, Jianxing Xia, Yi Zhang, Mo Li, Keith Gregory Brooks

Perovskite solar modules have been attracting increasing attention due to their market potential, yet publications concerned with theintrinsic scale-up potential of different perovskite compositions remain relatively scarce. On the other hand, while great ...

ELSEVIER SCIENCE SA2022

Bifunctional additive 2-amino-3-hydroxypyridine for stable and high-efficiency tin-lead perovskite solar cells

Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang, Keith Gregory Brooks

Tin-lead (Sn-Pb) mixed perovskite has received widespread attention due to its suitable band gap width and high optical absorption coefficients. However, the power conversion efficiency (PCE) of Sn-Pb mixed perovskite solar cells (PSCs) is still low due to ...

Royal Society of Chemistry2022

Molecular Engineering of Fluorene-Based Hole-Transporting Materials for Efficient Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Albertus Adrian Sutanto, Nadja Isabelle Desiree Klipfel, Keith Gregory Brooks, Maria Cristina Momblona Rincón

New Spiro-OMeTAD analogues and the simpler "half" structures with the terminated methoxyphenyl and/or carbazolyl chromophores are successfully synthesized under Hartwig-Buchwald amination conditions using commercially available starting materials. New fluo ...

WILEY-V C H VERLAG GMBH2022

Tailoring electric dipole of hole-transporting material p-dopants for perovskite solar cells

Mohammad Khaja Nazeeruddin, Jianxing Xia, Yi Zhang, Nadja Isabelle Desiree Klipfel, Keith Gregory Brooks, Min Chen, Yu Shi

Li-TFSI/t-BP are the most widely employed p-dopants for hole-transporting materials (HTMs) within the state-of-the-art perovskite solar cells (PSCs). The hygroscopicity and migration of these dopants, however, lead to devices with limited stability. To sol ...

CELL PRESS2022

Mechanistic Insights into the Role of the Bis(trifluoromethanesulfonyl) imide Ion in Coevaporated p-i-n Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Mounir Driss Mensi, Klaus Leifer, Cristina Roldán Carmona, Hiroyuki Kanda, Albertus Adrian Sutanto, Cansu Igci, Nadja Isabelle Desiree Klipfel, Keith Gregory Brooks

Hybrid lead halide perovskites have reached comparable efficiencies to state-of-the-art silicon solar cell technologies. However, a remaining key challenge toward commercialization is the resolution of the perovskite device instability. In this work, we id ...

2021

In Situ Graded Passivation via Porphyrin Derivative with Enhanced Photovoltage and Fill Factor in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang, Keith Gregory Brooks

While perovskite solar cells (PSCs) have recently experienced a rapid rise in power conversion efficiency (PCE), the prevailing PSCs still contain nondesirable defects in the interior and interface of the perovskite layer, which limits further enhancement ...

WILEY-V C H VERLAG GMBH2021

Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Bin Ding, Yen-Cheng Liu, Hiroyuki Kanda, Keith Gregory Brooks

Salt passivation of perovskite often results in formation of 2D perovskite layers, which impaired charge transport behaviour. Here, the authors study the energy barrier of 2D perovskite formation upon passivation by different iodide salt, and provide insig ...

Nature Portfolio2021

The Synergism of DMSO and Diethyl Ether for Highly Reproducible and Efficient MA(0.5)FA(0.5)PbI(3)Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Tom Theodorus Antonius Lummen, Yi Zhang, Yonghui Lee, Keith Gregory Brooks, Ruiyuan Hu, Min Chen

Composition and film quality of perovskite are crucial for the further improvement of perovskite solar cells (PSCs), including efficiency, reproducibility, and stability. Here, it is demonstrated that by simply mixing 50% of formamidinium (FA(+)) into meth ...

2020

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Mechanistic Insights into the Role of the Bis(trifluoromethanesulfonyl) imide Ion in Coevaporated p-i-n Perovskite Solar Cells

2021