Publications related to Method of modifying the structure of perovskite films

Related publications (15)

Dipolar Carbazole Ammonium for Broadened Electric Field Distribution in High-Performance Perovskite Solar Cells

Felix Thomas Eickemeyer, Likai Zheng, Jaeki Jeong

Perovskite solar cells (PSCs) with ammonium passivation exhibit superior device performance and stability. Beyond typical chemical passivation, ammonium salts control the electronic structure of perovskite surfaces, yet the molecular structure-property rel ...

2025

De-doping engineering for efficient and heat-stable perovskite solar cells

Michael Graetzel

In conventional n-i-p perovskite solar cells, unsolved issues persist, particularly concerning notorious performance degradation under prolonged heat exposure at 85°C. By reducing the concentration of 4-tert-butylpyridine (tBP) and lithium bis(trifluoromet ...

2025

Effect of imidazole-based additives on the voltage of dye sensitized solar cells with Cu(II/I) redox mediators

Michael Graetzel, Ladislav Kavan

Acetonitrile solutions of Cu(tmby)22+ exhibit aging-dependent changes of UV–Vis spectra, which were attributed to partial reduction to Cu(tmby)2+. This effect is boosted by the addition of imidazole bases, i.e., N-methyl-benzimidazole (NMB) or 5‑chloro-1-e ...

2025

High carrier mobility along the [111] orientation in Cu2O photoelectrodes

Michael Graetzel, Paul Joseph Dyson, Ulf Anders Hagfeldt, Dan Ren, Linfeng Pan, Lu Chen, Meng Xia, Wenzhe Niu

Solar fuels offer a promising approach to provide sustainable fuels by harnessing sunlight(1,2). Following a decade of advancement, Cu2O photocathodes are capable of delivering a performance comparable to that of photoelectrodes with established photovolta ...

Nature Portfolio2024

High Performance Semiconducting Nanosheets via a Scalable Powder-Based Electrochemical Exfoliation Technique

Kevin Sivula, Aleksandra Radenovic, Victor Carle Adrien Boureau, Miao Zhang, Tzu-Heng Chen

The liquid-phase exfoliation of semiconducting transition metal dichalcogenide (TMD) powders into 2D nanosheets represents a promising route toward the scalable production of ultrathin high-performance optoelectronic devices. However, the harsh conditions ...

2022

Interplay of Kinetic and Thermodynamic Reaction Control Explains Incorporation of Dimethylammonium Iodide into CsPbI3

Ursula Röthlisberger, David Lyndon Emsley, Dominik Józef Kubicki, Aditya Mishra, Marko Mladenovic, Mathias Dankl, Ariadni Boziki

CsPbI3 is a promising material for optoelectronics owing to its thermal robustness and favorable bandgap. However, its fabrication is challenging because its photoactive phase is thermodynamically unstable at room temperature. Adding dimethylammonium (DMA) ...

AMER CHEMICAL SOC2022

Influence of Charge Transport Layers on Open-Circuit Voltage and Hysteresis in Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Giulia Grancini, Yonghui Lee, Cristina Roldán Carmona, Saba Gharibzadeh

2018

Managing the solar spectrum at sub-wavelength scales: nanowire enabled new PV concepts (Conference Presentation)

Anna Fontcuberta i Morral, Pablo Romero Gómez

III-V semiconductor nanowires (NWs) are promising building blocks for next generation solar energy conversion at low cost. NW ensembles constitute a new class of metamaterial, where the optical properties of the array are tuned by the individual NW type, g ...

SPIE2018

Mesoscopic framework for organic-inorganic perovskite based photoelectric conversion device and method for manufacturing the same

Michael Graetzel, Shaik Mohammed Zakeeruddin, Mingkui Wang

The invention discloses a perovskite solar cell and a method of fabrication thereof. The perovskite solar cell sequentially comprises a transparent electrode, a mesoporous P-I-N framework and a counter electrode from the bottom to top; the mesoporous P-I-N ...

2016

Geometrical and energetical structural changes in organic dyes for dye-sensitized solar cells probed using photoelectron spectroscopy and DFT

Ulf Anders Hagfeldt

The effects of alkoxy chain length in triarylamine based donor acceptor organic dyes are investigated with respect to the electronic and molecular surface structures on the performance of solar cells and the electron lifetime. The dyes were investigated wh ...

Royal Soc Chemistry2016

Realization of GaInP/Si Dual-Junction Solar Cells With 29.8% 1-Sun Efficiency

Christophe Ballif, Matthieu Despeisse, Antonin Faes, Loris Barraud, Jacques Levrat, Antoine Descoeudres, Bertrand Yves Paul Paviet-Salomon, Stephanie Essig

Combining a Si solar cell with a high-bandgap top cell reduces the thermalization losses in the short wavelength and enables theoretical 1-sun efficiencies far over 30%. We have investigated the fabrication and optimization of Si-based tandem solar cells w ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Novel materials for stable perovskite solar cells

Antonio Abate

Spie-Int Soc Optical Engineering2015

A Material Approach to Dye-Sensitized Solar Cells : Atomic Layer Deposition and Inverse Opal Host-Guest Architectures

Philippe Pierre Labouchère

With growing concerns on future energy supplies, solar energy appears as an energy source whose potential remains to be tapped at a large scale. In the last two decades, dye-sensitized solar cells (DSCs) have been considered as a competitive means to conve ...

EPFL2014

See-Through Dye-Sensitized Solar Cells: Photonic Reflectors for Tandem and Building Integrated Photovoltaics

Michael Graetzel, Nicolas Tétreault, Leo-Philipp Heiniger

See-through dye-sensitized solar cells with 1D photonic crystal Bragg reflector photoanodes show an increase in peak external quantum efficiency of 47% while still maintaining high fill factors, resulting in an almost 40% increase in power conversion effic ...

Wiley-Blackwell2013

Ion-coordinating sensitizer in solid-state hybrid solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin

Wiley-VCH Verlag GmbH2005