2024

Abzieher, Tobias ; Feeney, Thomas ; Schackmar, Fabian ; Donie, Yidenekachew J. ; Hossain, Ihteaz M. ; Schwenzer, Jonas A. ; Hellmann, Tim ; Mayer, Thomas ; Powalla, Michael ; Paetzold, Ulrich W. (2024)
From Groundwork to Efficient Solar Cells: On the Importance of the Substrate Material in Co‐Evaporated Perovskite Solar Cells.
In: Advanced Functional Materials, 2021, 31 (42)
doi: 10.26083/tuprints-00020989
Article, Secondary publication, Publisher's Version

Mortan, Claudiu ; Hellmann, Tim ; Buchhorn, Moritz ; Melzi d'Eril, Marco ; Clemens, Oliver ; Mayer, Thomas ; Jaegermann, Wolfram (2024)
Preparation of methylammonium lead iodide (CH₃NH₃PbI₃) thin film perovskite solar cells by chemical vapor deposition using methylamine gas (CH₃NH₂) and hydrogen iodide gas.
In: Energy Science & Engineering, 2020, 8 (9)
doi: 10.26083/tuprints-00016175
Article, Secondary publication, Publisher's Version

Hellmann, Tim ; Das, Chittaranjan ; Abzieher, Tobias ; Schwenzer, Jonas A. ; Wussler, Michael ; Dachauer, Ralph ; Paetzold, Ulrich W. ; Jaegermann, Wolfram ; Mayer, Thomas (2024)
The Electronic Structure of MAPI‐Based Perovskite Solar Cells: Detailed Band Diagram Determination by Photoemission Spectroscopy Comparing Classical and Inverted Device Stacks.
In: Advanced Energy Materials, 2020, 10 (42)
doi: 10.26083/tuprints-00016176
Article, Secondary publication, Publisher's Version

Chakraborty, Biswarup ; Kalra, Shweta ; Beltrán‐Suito, Rodrigo ; Das, Chittaranjan ; Hellmann, Tim ; Menezes, Prashanth W. ; Driess, Matthias (2024)
A Low‐Temperature Molecular Precursor Approach to Copper‐Based Nano‐Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction.
In: Chemistry – An Asian Journal, 2020, 15 (6)
doi: 10.26083/tuprints-00015651
Article, Secondary publication, Publisher's Version

Scheuerlein, Martin Christoph ; Muench, Falk ; Kunz, Ulrike ; Hellmann, Tim ; Hofmann, Jan P. ; Ensinger, Wolfgang (2024)
Electroless Nanoplating of Iridium: Template‐Assisted Nanotube Deposition for the Continuous Flow Reduction of 4‐Nitrophenol.
In: ChemElectroChem, 2020, 7 (16)
doi: 10.26083/tuprints-00017441
Article, Secondary publication, Publisher's Version

2023

Gupta, Navneet Kumar ; Palenicek, Phillip ; Nortmeyer, Lucas ; Meyer, Gregor Maurice ; Schäfer, Timo ; Hellmann, Tim ; Hofmann, Jan P. ; Rose, Marcus (2023)
Modulating Catalytic Selectivity by Base Addition in Aqueous Reductive Amination of 1,6-Hexanediol Using Ru/C.
In: ACS Sustainable Chemistry & Engineering, 2022, 10 (44)
doi: 10.26083/tuprints-00024545
Article, Secondary publication, Postprint

Liang, Liang ; Feng, Quanchen ; Wang, Xingli ; Hübner, Jessica ; Gernert, Ulrich ; Heggen, Marc ; Wu, Longfei ; Hellmann, Tim ; Hofmann, Jan P. ; Strasser, Peter (2023)
Electroreduction of CO₂ on Au(310)@Cu High‐index Facets.
In: Angewandte Chemie International Edition, 2023, 62 (12)
doi: 10.26083/tuprints-00023703
Article, Secondary publication, Publisher's Version

2021

Hellmann, Tim (2021)
Advanced Understanding of the Electronic Properties of Perovskite Solar Cells: Contact Formation, Band Energy Diagrams and involved Surface Photovoltages.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00019803
Ph.D. Thesis, Primary publication, Publisher's Version