Search Results - "Hellmann, Tim"

Preparation of methylammonium lead iodide (CH3NH3PbI3) thin film perovskite solar cells by chemical vapor deposition using methylamine gas (CH3NH2) and hydrogen iodide gas.

Authors: Mortan, Claudiu Hellmann, Tim Buchhorn, Moritz et al.

Source: Energy Science & Engineering. Sep2020, Vol. 8 Issue 9, p3165-3173. 9p.

Subject Terms: *Chemical vapor deposition, *Perovskite, *Solar cells, *Lead iodide, *Thin films, *Lead oxides, *Dye-sensitized solar cells

Electroreduction of CO2 on Au(310)@Cu High‐index Facets.

Authors: Liang, Liang Feng, Quanchen Wang, Xingli et al.

Source: Angewandte Chemie International Edition; 3/13/2023, Vol. 62 Issue 12, p1-5, 5p

Networks, beliefs, and asset prices.

Authors: Hatcher, Michael Hellmann, Tim

Source: Journal of Economic Dynamics & Control. Apr2025, Vol. 173, pN.PAG-N.PAG. 1p.

From Groundwork to Efficient Solar Cells: On the Importance of the Substrate Material in Co-Evaporated Perovskite Solar Cells.

Authors: Abzieher, Tobias Feeney, Thomas Schackmar, Fabian et al.

Source: Advanced Functional Materials; 10/14/2021, Vol. 31 Issue 42, p1-19, 19p

Pairwise stable networks in homogeneous societies with weak link externalities.

Authors: Hellmann, Tim¹ (AUTHOR) t.hellmann@soton.ac.uk

Source: European Journal of Operational Research. Jun2021, Vol. 291 Issue 3, p1164-1179. 16p.

Subjects: Externalities, Strategy games, Centrality

On the existence and uniqueness of pairwise stable networks.

Authors: Hellmann, Tim¹, thellmann@wiwi.uni-bielefeld.de

Source: International Journal of Game Theory; Feb2013, Vol. 42 Issue 1, p211-237, 27p

R&D investments under endogenous cluster formation.

Authors: Dawid, Herbert Hellmann, Tim

Source: Journal of Economic Behavior & Organization. Jun2020, Vol. 174, p253-283. 31p.

Subjects: Investments, Desire, Equilibrium, Business enterprises, Oligopolies

Carbon‐Assisted Stable Silver Nanostructures.

Authors: Abdollahi, S. Narjes Ochoa Martínez, Efraín Kilchoer, Cédric et al.

Source: Advanced Materials Interfaces; 12/3/2020, Vol. 7 Issue 23, p1-10, 10p

The Electronic Structure of MAPI‐Based Perovskite Solar Cells: Detailed Band Diagram Determination by Photoemission Spectroscopy Comparing Classical and Inverted Device Stacks.

Authors: Hellmann, Tim Das, Chittaranjan Abzieher, Tobias et al.

Source: Advanced Energy Materials; 11/10/2020, Vol. 10 Issue 42, p1-11, 11p

Preparation of methylammonium lead iodide (CH3NH3PbI3) thin film perovskite solar cells by chemical vapor deposition using methylamine gas (CH3NH2) and hydrogen iodide gas.

Authors: Mortan, Claudiu Hellmann, Tim Buchhorn, Moritz et al.

Source: Energy Science & Engineering; Sep2020, Vol. 8 Issue 9, p3165-3173, 9p

Under-connected and over-connected networks: the role of externalities in strategic network formation.

Authors: Buechel, Berno Hellmann, Tim

Source: Review of Economic Design. Mar2012, Vol. 16 Issue 1, p71-87. 17p. 1 Diagram.

Electroless Nanoplating of Iridium: Template‐Assisted Nanotube Deposition for the Continuous Flow Reduction of 4‐Nitrophenol.

Authors: Scheuerlein, Martin Christoph Muench, Falk Kunz, Ulrike et al.

Source: ChemElectroChem; 8/17/2020, Vol. 7 Issue 16, p3496-3507, 12p

Tapered Cross‐Section Photoelectron Spectroscopy of State‐of‐the‐Art Mixed Ion Perovskite Solar Cells: Band Bending Profile in the Dark, Photopotential Profile Under Open Circuit Illumination, and Band Diagram.

Authors: Wussler, Michael Mayer, Thomas Das, Chittaranjan et al.

Source: Advanced Functional Materials; 7/2/2020, Vol. 30 Issue 27, p1-12, 12p

A Low-Temperature Molecular Precursor Approach to Copper-Based Nano-Sized Digenite Mineral for Efficient Electrocatalytic Oxygen Evolution Reaction.

Authors: Chakraborty, Biswarup Kalra, Shweta Beltrán-Suito, Rodrigo et al.

Source: Chemistry - An Asian Journal; 3/16/2020, Vol. 15 Issue 6, p852-859, 8p

International environmental agreements for local and global pollution.

Authors: Günther, Michael Hellmann, Tim

Source: Journal of Environmental Economics & Management. Jan2017, Vol. 81, p38-58. 21p.

Subjects: International environmental law, Pollution, Externalities, Public goods, Renegotiation

The evolution of R&D networks.

Authors: Dawid, Herbert Hellmann, Tim

Source: Journal of Economic Behavior & Organization. Sep2014, Vol. 105, p158-172. 15p.

Subjects: Research & development, Economic models, Direct costing, Stochastic analysis, Profit, Monotonic functions, Evolutionary theories

Evolution of social networks.

Authors: Hellmann, Tim Staudigl, Mathias

Source: European Journal of Operational Research. May2014, Vol. 234 Issue 3, p583-596. 14p.

Subjects: Social networks, Random graphs, Mathematical models, Markov processes, Game theory, Mathematical analysis

Opinion dynamics and wisdom under conformity.

Authors: Buechel, Berno Hellmann, Tim Klößner, Stefan

Source: Journal of Economic Dynamics & Control. Mar2015, Vol. 52, p240-257. 18p.

The dynamics of continuous cultural traits in social networks.

Authors: Buechel, Berno Hellmann, Tim Pichler, Michael M.

Source: Journal of Economic Theory. Nov2014, Vol. 154, p274-309. 36p.

From Groundwork to Efficient Solar Cells: On the Importance of the Substrate Material in Co‐Evaporated Perovskite Solar Cells.

Authors: Abzieher, Tobias Feeney, Thomas Schackmar, Fabian et al.

Source: Advanced Functional Materials; 5/9/2022, Vol. 32 Issue 19, p1-1, 1p