T
Thomas Geiger
Researcher at Swiss Federal Laboratories for Materials Science and Technology
Publications - 54
Citations - 3451
Thomas Geiger is an academic researcher from Swiss Federal Laboratories for Materials Science and Technology. The author has contributed to research in topics: Squaraine dye & Dye-sensitized solar cell. The author has an hindex of 23, co-authored 51 publications receiving 3217 citations. Previous affiliations of Thomas Geiger include University of St. Gallen & École Polytechnique Fédérale de Lausanne.
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Cellulose Fibrils for Polymer Reinforcement
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Efficient Far Red Sensitization of Nanocrystalline TiO2 Films by an Unsymmetrical Squaraine Dye
Jun-Ho Yum,Pablo Walter,Simon Huber,Daniel Rentsch,Thomas Geiger,Frank Nüesch,Filippo De Angelis,Michael Grätzel,Mohammad Khaja Nazeeruddin +8 more
TL;DR: An asymmetric squaraine sensitizer comprising an anchoring group was engineered at the molecular level and synthesized and exhibited an unprecedented incident photon to current conversion efficiency of 85% under standard AM 1.5 sunlight.
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PbS and CdS Quantum Dot-Sensitized Solid-State Solar Cells: “Old Concepts, New Results”
Hyo Joong Lee,Henry C. Leventis,Soo-Jin Moon,Peter Chen,Seigo Ito,Seigo Ito,Saif A. Haque,Tomás Torres,Frank Nüesch,Thomas Geiger,Shaik M. Zakeeruddin,Michael Grätzel,Md. K. Nazeeruddin +12 more
TL;DR: In this article, the performance of lead sulfide and cadmium sulfide (CdS) quantum dots (QDs) was investigated in solid-state solar cells with 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spiro-OMeTAD+ cation.
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Efficient co-sensitization of nanocrystalline TiO2 films by organic sensitizers
Jun-Ho Yum,Song-Rim Jang,Pablo Walter,Thomas Geiger,Frank Nüesch,Sang Hoon Kim,Jaejung Ko,Michael Grätzel,Mohammad Khaja Nazeeruddin +8 more
TL;DR: Dye-s Sensitized solar cells based on co-sensitization of organic dyes having complementary spectral absorption in the visible region resulted in a panchromatic response, which exhibited 86% incident monochromatic photon-to-current conversion efficiency in thevisible region.
Journal ArticleDOI
Molecular Design of Unsymmetrical Squaraine Dyes for High Efficiency Conversion of Low Energy Photons into Electrons Using TiO2 Nanocrystalline Films
Thomas Geiger,Simon Kuster,Jun-Ho Yum,Soo-Jin Moon,Mohammad Khaja Nazeeruddin,Michael Grätzel,Frank Nüesch +6 more
TL;DR: In this article, an optimized unsymmetrical squaraine dye with carboxylic acid as anchoring group is synthesized for dye-sensitized solar cells (DSCs).