J
Jun-Ho Yum
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 151
Citations - 25690
Jun-Ho Yum is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Dye-sensitized solar cell & Solar cell. The author has an hindex of 65, co-authored 139 publications receiving 23209 citations. Previous affiliations of Jun-Ho Yum include Korea Institute of Science and Technology & Gwangju Institute of Science and Technology.
Papers
More filters
Journal ArticleDOI
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%
Hui-Seon Kim,Chang-Ryul Lee,Jeong-Hyeok Im,Ki Beom Lee,Thomas Moehl,Arianna Marchioro,Soo-Jin Moon,Robin Humphry-Baker,Jun-Ho Yum,Jacques-E. Moser,Michael Grätzel,Nam-Gyu Park +11 more
TL;DR: The use of a solid hole conductor dramatically improved the device stability compared to (CH3NH3)PbI3 -sensitized liquid junction cells.
Journal ArticleDOI
Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance
Stefaan De Wolf,Jakub Holovsky,Soo-Jin Moon,Philipp Löper,Bjoern Niesen,Martin Ledinsky,Martin Ledinsky,F.-J. Haug,Jun-Ho Yum,Christophe Ballif +9 more
TL;DR: Using highly sensitive photothermal deflection and photocurrent spectroscopy, the absorption spectrum of CH3NH3PbI3 perovskite thin films at room temperature is measured, finding a high absorption coefficient with particularly sharp onset and a compositional change of the material.
Journal ArticleDOI
Molecular engineering of organic sensitizers for solar cell applications.
Sung-Kwan Kim,Lee Jk,Sang Ook Kang,Jaejung Ko,Jun-Ho Yum,Simona Fantacci,De Angelis F,Di Censo D,Mohammad Khaja Nazeeruddin,Michael Grätzel +9 more
TL;DR: The results show that the cyanoacrylic acid groups are essentially coplanar with respect to the thiophene units, reflecting the strong conjugation across theThiophene-cyanoac acrylic groups.
Journal ArticleDOI
Molecular Engineering of Organic Sensitizers for Dye-Sensitized Solar Cell Applications
Daniel P. Hagberg,Jun-Ho Yum,Hyo Joong Lee,Filippo De Angelis,Tannia Marinado,Karl Martin Karlsson,Robin Humphry-Baker,Licheng Sun,Anders Hagfeldt,Michael Grätzel,Khaja Nazeeruddin +10 more
TL;DR: Novel unsymmetrical organic sensitizers comprising donor, electron-conducting, and anchoring groups were engineered at a molecular level and synthesized for sensitization of mesoscopic titanium dioxide injection solar cells revealing that the long electron lifetime is responsible for differences in observed open-circuit potential of the cell.
Journal ArticleDOI
A cobalt complex redox shuttle for dye-sensitized solar cells with high open-circuit potentials
Jun-Ho Yum,Etienne Baranoff,Florian Kessler,Thomas Moehl,Shahzada Ahmad,Takeru Bessho,Arianna Marchioro,Elham Ghadiri,Jacques-E. Moser,Chenyi Yi,Md. K. Nazeeruddin,Michael Grätzel +11 more
TL;DR: An open-circuit voltage of over 1,000 mV is reported in mesoscopic dye-sensitized solar cells incorporating a molecularly engineered cobalt complex as redox mediator, indicating that the molecularly engineering cobalt redox shuttle is a legitimate alternative to the commonly used I3−/I− redox Shuttle.