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Tom Theodorus Antonius Lummen

Cette personne n’est plus à l’EPFL

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Publications associées (61)

Effective Preparation of Nanoscale CH3NH3PbI3 Perovskite Photosensitizers for Mesoporous TiO2-Based Solar Cells by Successive Precursor Layer Adsorption and Reaction Process

Mohammad Khaja Nazeeruddin, Yonghui Lee, Tom Theodorus Antonius Lummen, Kyung Taek Cho, Sanghyun Paek, Iwan Zimmermann, Aron Joel Huckaba, Hobeom Kim, So-Min Yoo

Nanoscale CH3NH3PbI3 perovskite sensitizers are grown by delivering each precursor successively onto the surface of mesoporous (meso) TiO2 electrodes. Using Pb(NO3)(2) ions as a lead(II) source and CH3NH3I (MAI) for methylammonium and iodide sources, repet ...

2020

Soft Template-Controlled Growth of High-Quality CsPbI3 Films for Efficient and Stable Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Yong Ding, Xuehui Liu, Cheng Liu

The unfavorable morphology and inefficient utilization of phase transition reversibility have limited the high-temperature-processed inorganic perovskite films in both efficiency and stability. Here, a simple soft template-controlled growth (STCG) method i ...

2020

High-humidity processed perovskite solar cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen

Perovskite solar cells (PSCs) are considered the next-in-line technology in the solar industry. This technology can reduce the cost of solar energy to an unprecedented level given their remarkably high efficiency and ease of manufacturing. Hitherto, many s ...

Royal Society of Chemistry2020

Spontaneously Self-Assembly of a 2D/3D Heterostructure Enhances the Efficiency and Stability in Printed Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Chuan Wang, Tom Theodorus Antonius Lummen, Fei Guo, Xuehui Liu, Chaohui Li

As perovskite solar cells (PSCs) are highly efficient, demonstration of high-performance printed devices becomes important. 2D/3D heterostructures have recently emerged as an attractive way to relieving the film inhomogeneity and instability in perovskite ...

2020

Ionic dipolar switching hinders charge collection in perovskite solar cells with normal and inverted hysteresis

Mohammad Khaja Nazeeruddin, Sadig Aghazada, Tom Theodorus Antonius Lummen, Kyung Taek Cho, Iwan Zimmermann

Drift-diffusion modeling of the ionic dipole switching from the measurement of fast scanned and long pre-biased electrical response is proposed as a novel protocol for evaluation of limit hysteretic effects in perovskite solar cells. Up to eight systems we ...

2019

Nanoscale Lead(II) Iodide-sensitized Solar Cell

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, So-Min Yoo

Nanometer-sized PbI2 particles were deposited over mesoporous TiO2 film by spin-coating and tested as a photosensitizer. The as-prepared PbI2-sensitized solar cell gave overall power conversion efficiency of 1.41% which was almost four times better than a ...

2019

Dibenzoquinquethiophene- and Dibenzosexithiophene-Based Hole-Transporting Materials for Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Iwan Zimmermann, Javier Urieta Mora

Fused oligothiophene-based pi-conjugated organic derivatives have been widely used in electronic devices. In particular, two-dimensional (2D) heteroarenes offer the possibility of broadening the scope by extending the pi-conjugated framework, which endows ...

2019

Optoelectronic Properties of Layered Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yonghui Lee, Tom Theodorus Antonius Lummen, Kyung Taek Cho, Sanghyun Paek

Herein, the optoelectronic properties of interface-engineered perovskite 2D|3D-heterojunction structure solar cells are reported. The reciprocity theorem is applied to determine the maximum open-circuit voltage (V-oc) the device can deliver under solar ill ...

2019

Phthalocyanines and porphyrinoid analogues as hole- and electron-transporting materials for perovskite solar cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen

Organic-inorganic lead halide perovskite absorbers in combination with electron and hole transporting selective contacts result in power conversion efficiencies of over 23% under AM 1.5 sun conditions. The advantage of perovskite solar cells is their simpl ...

Royal Society of Chemistry2019

Phthalocyanines for dye-sensitized solar cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen

Phthalocyanines (Pcs) are robust and intensely colored macrocycles (blue pigments) with high chemical, thermal and light stability, properties that are of paramount importance for realistic photovoltaic applications. In particular, Pcs have played a very i ...

2019

Perovskite Solar Cells Using Surface-Modified NiOx Nanoparticles as Hole Transport Materials in n-i-p Configuration

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Hiroyuki Kanda, Ryuji Kaneko

Modified NiOx nanoparticles (NPs) developed via surface engineering are applied to a hole transport layer (HTL) in n-i-p-structured perovskite solar cells (PSCs). Hexanoic acid (HA) as a surfactant improves the dispersibility of NiOx NPs in chlorobenzene ( ...

2019

Methodical review of the literature referred to the dye-sensitized solar cells: Bibliometrics analysis and road mapping

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Zubair Ahmad

This study presents a systematic review of the literature pertaining to dye-sensitized solar cells (DSSCs), in order to anticipate the direction and speed of change in technology trend. To study the general progression in DSSC research, we have assessed th ...

2019

Template-Assisted Formation of High-Quality alpha-Phase HC(NH2)(2)PbI3 Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Yong Ding, Xuehui Liu, Cheng Liu

Formamidinium (FA) lead halide (alpha-FAPbI(3)) perovskites are promising materials for photovoltaic applications because of their excellent light harvesting capability (absorption edge 840 nm) and long carrier diffusion length. However, it is extremely di ...

2019

Appraisement of Crystal Expansion in CH3NH3PbI3 on Doping: Improved Photovoltaic Properties

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen

Three-dimensional hybrid perovskite materials (CH3NH3PbI3) suffer from intrinsic instability owing to organic cation evaporation and ion migration. The inclusion of a large organic cation such as guanidinium has been probed to stabilize the structure. This ...

2019

In-situ cross-linkable hole transporting triazatruxene monomers for optoelectronic devicestr

Mohammad Khaja Nazeeruddin, Kasparas Rakstys, Tom Theodorus Antonius Lummen, Aron Joel Huckaba

The invention discloses a polymerizable triazatruxene-based compound of formula (I), an optoelectronic and/or photoelectrochemical device comprising said compound of formula (I) as hole transporting material in hole transport layer under the form of a poly ...

2019

Perovskite Photovoltaics: The Significant Role of Ligands in Film Formation, Passivation, and Stability

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Hong Zhang

Due to their outstanding optoelectronic properties, metal halide perovskites have been intensively studied in recent years. The latest certificated efficiency of 23.3% recently achieved in perovskite solar cells (PVSCs) enables them to be used as a very pr ...

Wiley2019

Lead and HTM Free Stable Two-Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications

Mohammad Khaja Nazeeruddin, Sadig Aghazada, Tom Theodorus Antonius Lummen, Iwan Zimmermann

Organic-inorganic hybrid perovskites have attracted great attention over the last few years as potential light-harvesting materials for efficient and cost-effective solar cells. However, the use of lead iodide in state-of-the-art perovskite devices may dem ...

Wiley-VCH Verlag GmbH2019

Holographic imaging of electromagnetic fields via electron-light quantum interference

Fabrizio Carbone, Ivan Madan, Enrico Pomarico, Tom Theodorus Antonius Lummen, Gabriele Berruto, Giovanni Maria Vanacore, Tatiana Latychevskaia

Holography relies on the interference between a known reference and a signal of interest to reconstruct both the amplitude and the phase of that signal. With electrons, the extension of holography to the ultrafast time domain remains a challenge, although ...

American Association for the Advancement of Science (AAAS)2019

Ultrafast imaging of plasmons in a transmission electron microscope

Fabrizio Carbone, Tom Theodorus Antonius Lummen, Gabriele Berruto

Miniaturized plasmonic and photonic integrated circuits are generally considered as the core of future generations of optoelectronic devices, due to their potential to bridge the size-compatibility gap between photonics and electronics. However, as the nan ...

Spie-Int Soc Optical Engineering2016

Imaging and controlling plasmonic interference fields at buried interfaces

Fabrizio Carbone, Brett Eugene Barwick, Tom Theodorus Antonius Lummen, Gabriele Berruto

Capturing and controlling plasmons at buried interfaces with nanometre and femtosecond resolution has yet to be achieved and is critical for next generation plasmonic devices. Here we use light to excite plasmonic interference patterns at a buried metal-di ...

Nature Publishing Group2016

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