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Yuhang Liu
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 31
Citations - 3307
Yuhang Liu is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Perovskite (structure) & Photovoltaic system. The author has an hindex of 17, co-authored 31 publications receiving 1619 citations.
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Journal ArticleDOI
Ultrahydrophobic 3D/2D fluoroarene bilayer-based water-resistant perovskite solar cells with efficiencies exceeding 22.
Yuhang Liu,Seckin Akin,Seckin Akin,Linfeng Pan,Ryusuke Uchida,Ryusuke Uchida,Neha Arora,Jovana V. Milić,Alexander Hinderhofer,Frank Schreiber,Alexander R. Uhl,Shaik M. Zakeeruddin,Anders Hagfeldt,M. Ibrahim Dar,Michael Grätzel +14 more
TL;DR: This new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE, and enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22%, the highest reported for 3D/2D architectures.
Journal ArticleDOI
Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells.
Haizhou Lu,Yuhang Liu,Paramvir Ahlawat,Aditya Mishra,Wolfgang Tress,Felix Eickemeyer,Yingguo Yang,Fan Fu,Zaiwei Wang,Claudia E. Avalos,Brian Carlsen,Anand Agarwalla,Xin Zhang,Xiaoguo Li,Yiqiang Zhan,Shaik M. Zakeeruddin,Lyndon Emsley,Ursula Rothlisberger,Li-Rong Zheng,Anders Hagfeldt,Michael Grätzel +20 more
TL;DR: A deposition method using methylammonium thiocyanate vapor treatment to convert δ-FAPbI3 to the desired pure α-phase below the thermodynamic phase-transition temperature is shown.
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Tailored Amphiphilic Molecular Mitigators for Stable Perovskite Solar Cells with 23.5% Efficiency
Hongwei Zhu,Hongwei Zhu,Yuhang Liu,Felix Eickemeyer,Linfeng Pan,Dan Ren,Marco A. Ruiz‐Preciado,Brian Carlsen,Bowen Yang,Xiaofei Dong,Zaiwei Wang,Hongli Liu,Shirong Wang,Shaik M. Zakeeruddin,Anders Hagfeldt,M. Ibrahim Dar,Xianggao Li,Michael Grätzel +17 more
TL;DR: It is found that simple surface treatment with tBBAI significantly accelerates the charge extraction from the perovskite into the spiro-OMeTAD hole-transporter, while retarding the nonradiative charge carrier recombination, boosting the power conversion efficiency (PCE) of the PSC and reducing the hysteresis to barely detectable levels.
Journal ArticleDOI
Direct Contact of Selective Charge Extraction Layers Enables High-Efficiency Molecular Photovoltaics
TL;DR: In this paper, an advanced dye-sensitized solar cells (DSCs) architecture is presented, which achieves efficiencies of 13.1% under air mass 1.5 global, 100 mW cm −2 solar radiation, and power conversion efficiency of 32% under a standard Osram 930 Warm White fluorescent tube light at 1,000 lux intensity.
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Bifunctional Organic Spacers for Formamidinium-Based Hybrid Dion-Jacobson Two-Dimensional Perovskite Solar Cells.
Yang Li,Yang Li,Yang Li,Jovana V. Milić,Amita Ummadisingu,Ji-Youn Seo,Jeong-Hyeok Im,Hui-Seo Kim,Yuhang Liu,M. Ibrahim Dar,Shaik M. Zakeeruddin,Peng Wang,Anders Hagfeldt,Michael Grätzel +13 more
TL;DR: This work demonstrates the first example of a formamidinium (FA) containing Dion-Jacobson 2D perovskite material characterized by the BFA n-1Pb nI3 n+1 formulation through employing a novel bifunctional organic spacer (B), namely 1,4-phenylenedimethanammonium (PDMA).