Publications related to Determination of Thermal Expansion Coefficients and Locating the Temperature-Induced Phase Transition in Methylammonium Lead Perovskites Using X-ray Diffraction

Perovskite Solar Cells Based on Nanocolumnar PlasmaDeposited ZnO Thin Films

Michael Graetzel, Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

ZnO thin films having a nanocolumnar microstructure are grown by plasma-enhanced chemical vapor deposition at 423 K on pre-treated fluorine-doped tin oxide (FTO) substrates. The films consist of c-axis-oriented wurtzite ZnO nanocolumns with well-defined mi ...

Wiley-Blackwell2014

A hybrid lead iodide perovskite and lead sulfide QD heterojunction solar cell to obtain a panchromatic response

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Peng Qin, Lioz Etgar

We report for the first time on co-sensitization between CH3NH3PbI3 perovskite and PbS quantum dots (QDs) in a heterojunction solar cell to obtain a panchromatic response from the visible to near IR regions. Following the deposition of the sensitizers on a ...

Royal Society of Chemistry2014

Nanocrystalline Rutile Electron Extraction Layer Enables Low-Temperature Solution Processed Perovskite Photovoltaics with 13.7% Efficiency

Michael Graetzel, Mohammad Khaja Nazeeruddin, Peng Gao, Aswani Yella, Leo-Philipp Heiniger

We demonstrate low-temperature (70 degrees C) solution processing of TiO2/CH3NH3PbI3 based solar cells, resulting in impressive power conversion efficiency (PCE) of 13.7%. Along with the high efficiency, a strikingly high open circuit potential (V-OC) of 1 ...

American Chemical Society2014

Enhanced crystallinity in organic-inorganic lead halide perovskites on mesoporous TiO2 via disorder-order phase transition

Ulf Anders Hagfeldt

Organic-inorganic halide perovskite (OIHP) compounds are very interesting materials for device application in, for example, solar cells, electro-optics, and electronic circuits. In this report, we investigated OIHPs reported as CH3NH3PbI3-xClx (MAPbI 3-xCl ...

2014

High-performance tandem silicon solar cells on F:SnO2

Christophe Ballif, Sylvain Nicolay, Laura Ding

High-performance transparent conducting oxides (TCOs) have significance for optimising PV performance. The efficiency of the resulting solar cells is dependent particularly on achieving high light scattering, low resistivity and low absorption (via low fre ...

Elsevier2013

Comparison of amorphous silicon absorber materials: Light-induced degradation and solar cell efficiency

Christophe Ballif, Franz-Josef Haug, Jan-Willem Alexander Schüttauf, Matthieu Despeisse, Grégory Bugnon, Michael Elias Stückelberger

Several amorphous silicon (a-Si:H) deposition conditions have been reported to produce films that degrade least under light soaking when incorporated into a-Si:H solar cells. However, a systematic comparison of these a-Si:H materials has never been present ...

American Institute of Physics2013

Strategies to Optimizing Dye-Sensitized Solar Cells

Sophie Wenger

Dye-sensitized solar cells (DSCs) constitute a novel class of hybrid organic-inorganic solar cells. At the heart of the device is a mesoporous film of titanium dioxide (TiO2) nanoparticles, which are coated with a monolayer of dye sensitive to the visible ...

EPFL2010

Ferroelectric Nanowires

Jin Wang

Ferroelectric perovskites exhibit superior dielectric, piezoelectric and ferroelectric properties. Architecting ferroelectrics in the small scale holds interest in both application and fundamental research. Compared to their 2D counterparts – thin films, f ...

EPFL2010

Single and multi-junction thin film silicon solar cells for flexible photovoltaics

Thomas Söderström

This thesis investigates amorphous (a-Si:H) and microcrystalline (μc-Si:H) solar cells deposited by very high frequency plasma enhanced chemical vapor deposition (VHF-PECVD) in the n-i-p or substrate configuration. It focuses on processes that allow the us ...

University of Neuchâtel2009

All the Disorder Mechanisms in the 13:58 Phases Come Together. Out of the Modulated Confusion Rises the Remarkable Phase Ce12.60Cd58.68(2)

The compound

Ce_{12.60}Cd_{58.68(2)}

is a metrically commensurate representative of the incommensurately modulated phase

Ce_{13}Cd_{57+\delta}

. It is most likely a lock-in phase. The structure, which was solved using seeding of the modulation from thos ...

2008

Determination of Thermal Expansion Coefficients and Locating the Temperature-Induced Phase Transition in Methylammonium Lead Perovskites Using X-ray Diffraction

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Perovskite Solar Cells Based on Nanocolumnar PlasmaDeposited ZnO Thin Films

A hybrid lead iodide perovskite and lead sulfide QD heterojunction solar cell to obtain a panchromatic response

Nanocrystalline Rutile Electron Extraction Layer Enables Low-Temperature Solution Processed Perovskite Photovoltaics with 13.7% Efficiency

Enhanced crystallinity in organic-inorganic lead halide perovskites on mesoporous TiO2 via disorder-order phase transition

High-performance tandem silicon solar cells on F:SnO2

Comparison of amorphous silicon absorber materials: Light-induced degradation and solar cell efficiency

Strategies to Optimizing Dye-Sensitized Solar Cells

Ferroelectric Nanowires

Single and multi-junction thin film silicon solar cells for flexible photovoltaics

All the Disorder Mechanisms in the 13:58 Phases Come Together. Out of the Modulated Confusion Rises the Remarkable Phase Ce12.60Cd58.68(2)

High-performance tandem silicon solar cells on F:SnO2

Strategies to Optimizing Dye-Sensitized Solar Cells

Single and multi-junction thin film silicon solar cells for flexible photovoltaics

All the Disorder Mechanisms in the 13:58 Phases Come Together. Out of the Modulated Confusion Rises the Remarkable Phase Ce12.60Cd58.68(2)

A hybrid lead iodide perovskite and lead sulfide QD heterojunction solar cell to obtain a panchromatic response

Perovskite Solar Cells Based on Nanocolumnar PlasmaDeposited ZnO Thin Films

Nanocrystalline Rutile Electron Extraction Layer Enables Low-Temperature Solution Processed Perovskite Photovoltaics with 13.7% Efficiency

Enhanced crystallinity in organic-inorganic lead halide perovskites on mesoporous TiO2 via disorder-order phase transition

Comparison of amorphous silicon absorber materials: Light-induced degradation and solar cell efficiency

Ferroelectric Nanowires