Publications de Henry Snaith | EPFL Graph Search

In Operando, Photovoltaic, and Microscopic Evaluation of Recombination Centers in Halide Perovskite-Based Solar Cells

Ulf Anders Hagfeldt, Henry Snaith, Silver Hamill Turren Cruz

The origin of the low densities of electrically active defects in Pb halide perovskite (HaP), a crucial factor for their use in photovoltaics, light emission, and radiation detection, remains a matter of discussion, in part because of the difficulty in det ...

AMER CHEMICAL SOC2022

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Henry Snaith, Konrad Domanski, Wolfgang Richard Tress, Antonio Abate, Michael Saliba, Monica Marcela Lira Cantu, Haibing Xie, Kai Zhu

Improving the long-term stability of perovskite solar cells is critical to the deployment of this technology. Despite the great emphasis laid on stability-related investigations, publications lack consistency in experimental procedures and parameters repor ...

NATURE PUBLISHING GROUP2020

Device Performance of Emerging Photovoltaic Materials (Version 1)

Mohammad Khaja Nazeeruddin, Henry Snaith, Tor Jesper Jacobsson, Fei Guo

Emerging photovoltaics (PVs) focus on a variety of applications complementing large scale electricity generation. Organic, dye-sensitized, and some perovskite solar cells are considered in building integration, greenhouses, wearable, and indoor application ...

WILEY-V C H VERLAG GMBH2020

Carbazole-based enamine: Low-cost and efficient hole transporting material for perovskite solar cells

Mohammad Khaja Nazeeruddin, Henry Snaith, Kasparas Rakstys, Kyung Taek Cho, Sanghyun Paek

A simple carbazole-based conjugated enamine V950 was synthesized, fully characterized and incorporated into a perovskite solar cell, which displayed high power conversion efficiency close to 18%. The investigated hole transporting material was synthesize ...

Elsevier Science Bv2017

Trends in Perovskite Solar Cells and Optoelectronics: Status of Research and Applications from the PSCO Conference

Mohammad Khaja Nazeeruddin, Henry Snaith, Filippo de Angelis

2017

Enhanced Efficiency and Stability of Perovskite Solar Cells Through Nd-Doping of Mesostructured TiO2

Michael Graetzel, Henry Snaith, Antonio Abate

Block-copolymer templated chemical solution deposition is used to prepare mesoporous Nd-doped TiO2 electrodes for perovskite-based solar cells. X-ray diffraction and photothermal deflection spectroscopy show substitutional incorporation into the TiO2 cryst ...

Wiley-V C H Verlag Gmbh2016

Methylammonium lead triiodide perovskite solar cells: A new paradigm in photovoltaics

Mohammad Khaja Nazeeruddin, Henry Snaith

Perovskite solar cells based on methylammonium lead triiodide witnessed unprecedented progress after the seminal work of Miyasaka and co-workers in 2009, where they employed perovskite nanocrystals as sensitizers in a dye-sensitized solar-cell configuratio ...

Cambridge University Press2015

Improving the Long-Term Stability of Perovskite Solar Cells with a Porous Al2O3 Buffer Layer

Henry Snaith, Antonio Abate, Wei Zhang

Hybrid perovskites represent a new paradigm for photovoltaics, which have the potential to overcome the performance limits of current technologies and achieve low cost and high versatility. However, an efficiency drop is often observed within the first few ...

Amer Chemical Soc2015

Lessons Learned: From Dye-Sensitized Solar Cells to All-Solid-State Hybrid Devices

Henry Snaith, Stefan Guldin

The field of solution-processed photovoltaic cells is currently in its second spring. The dye-sensitized solar cell is a widely studied and longstanding candidate for future energy generation. Recently, inorganic absorber-based devices have reached new rec ...

Wiley-V C H Verlag Gmbh2014

Layer-by-Layer Formation of Block-Copolymer-Derived TiO2 for Solid-State Dye-Sensitized Solar Cells

Henry Snaith, Morgan Mertens Stefik, Stefan Guldin

Wiley-Blackwell2011

Optical description of solid-state dye-sensitized solar cells. I. Measurement of layer optical properties

Michael Graetzel, Henry Snaith

The efficiency of a photovoltaic device is limited by the portion of solar energy that can be captured. We discuss how to measure the optical properties of the various layers in solid-state dye-sensitized solar cells (SDSC). We use spectroscopic ellipsomet ...

2009

Optical description of solid-state dye-sensitized solar cells. II. Device optical modeling with implications for improving efficiency

Michael Graetzel, Henry Snaith

We use the optical transfer-matrix method to quantify the spatial distribution of light in solid-state dye-sensitized solar cells (DSCs), employing material optical properties measured experimentally in the accompanying article (Part I) as input into the o ...

2009

Charge Generation and Photovoltaic Operation of Solid-State Dye-Sensitized Solar Cells Incorporating a High Extinction Coefficient Indolene-Based Sensitizer

Michael Graetzel, Henry Snaith

An investigation of the function of an indolene-based organic dye, termed D149, incorporated in to solid-state dye-sensitized solar cells using 2,2',7,7'- tetrakis(N,N-di-p-methoxypheny-amine)-9,9' - spirobifluorene (spiro-OMeTAD) as the hole transport mat ...

2009

Charge collection and pore filling in solid-state dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker, Ilkay Cesar, Peter Chen, Henry Snaith

The solar to electrical power conversion efficiency for dye-sensitized solar cells (DSCs) incorporating a solid-state organic hole-transporter can be over 5%. However, this is for devices significantly thinner than the optical depth of the active composite ...

2008

The function of a TiO2 compact layer in dye-sensitized solar cells incorporating "Planar" organic dyes

Michael Graetzel, Udo Bach, Henry Snaith

We present a device based study into the operation of liquid electrolyte dye-sensitized solar cells (DSSC's) using organic dyes. We find that, for these systems, it is entirely necessary to employ a compact TiO2 layer between the transparent fluorine doped ...

American Chemical Society (ACS)2008

High Extinction Coefficient "Antenna" Dye in Solid-State Dye-Sensitized Solar Cells: A Photophysical and Electronic Study

Michael Graetzel, Jacques-Edouard Moser, Mohammad Khaja Nazeeruddin, Joël Teuscher, Henry Snaith

2008

A new ion-coordinating ruthenium sensitizer for mesoscopic dye-sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Robin Humphry-Baker, Henry Snaith

2008

Liquid charge transporting material

Michael Graetzel, Shaik Mohammed Zakeeruddin, Henry Snaith

The present invention relates to optoelectronic and/or electrochemical devices comprising an organic charge transporting material which is liquid at a temperature of =180 DEG C. In particular in dye-sensitised solar cells, quantum efficiency higher than wi ...

2007

Efficient Sensitization of Nanocrystalline TiO2 Films by a Near Infrared Absorbing Unsymmetrical Zinc Phthalocyanine

Michael Graetzel, Kuppuswamy Kalyanasundaram, Mohammad Khaja Nazeeruddin, Henry Snaith, Jun Ho Yum

Wiley-VCH Verlag GmbH2007

New Trends in Dye Sensitized Solar Cell Research

Michael Graetzel, Paul Liska, Ravindranathan Thampi, Henry Snaith

2006