Publication

Double-Layer TiO2 Electrodes with Controlled Phase Composition and Morphology for Efficient Light Management in Dye-Sensitized Solar Cells

Publications associées (115)

A systematic investigation on the photoelectrocatalytic (PEC) performance of a series of CuW1-xMoxO4 materials with different Mo for W substitution (x = 0-0.8), successfully synthesized as single, transparent photoactive layers, allowed us to identify copp ...

Royal Soc Chemistry2024

Block Copolymer Stabilized Liquid Nanodroplets Facilitate Efficient Triplet Fusion-Based Photon Upconversion in Solid Polymer Matrices

Felipe Andres Saenz Padilla

Sensitized triplet-triplet annihilation-based photon upconversion is a photo-physical process that affords anti-Stokes-shifted emission after annihilation of two metastable triplet excitons of an emitter dye and the formation of a fluorescent singlet state ...

AMER CHEMICAL SOC2021

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

Mohammad Khaja Nazeeruddin, 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

Atomistic origins of the limited phase stability of Cs+-rich FAxCs(1-x)PbI3 mixtures

Michael Graetzel, David Lyndon Emsley, Ursula Röthlisberger, Ariadni Boziki, Simone Meloni, Dominik Józef Kubicki, Aditya Mishra

Mixed cation perovskites, [HC(NH2)2]xCs(1-x)PbI3, (FAxCs(1-x)PbI3) with x=0.8 achieve high solar cell power conversion efficiencies (PCEs) while exhibiting long-term stability under ambient conditions. In this work, we perform density functional theory (DF ...

ACS2020

Fluorination of Organic Spacer Impacts on the Structural and Optical Response of 2D Perovskites

Mohammad Khaja Nazeeruddin, Giulia Grancini, Valentin Ianis Emmanuel Queloz, Inés Garcia Benito, Pietro Caprioglio

Low-dimensional hybrid perovskites have triggered significant research interest due to their intrinsically tunable optoelectronic properties and technologically relevant material stability. In particular, the role of the organic spacer on the inherent stru ...

2020

Hazardous chemicals excruciatingly contaminated water, air, and soil for the past few decades. Eco-friendly techniques to clean and or destroy these harmful chemicals is an urgent requirement at this moment. In this direction, a large number of methodologi ...

ELSEVIER SCIENCE SA2020

Mechanoperovskites for Photovoltaic Applications: Preparation, Characterization, and Device Fabrication

Pankaj Kumar Yadav, Daniel Prochowicz

Hybrid organic-inorganic metal halide perovskites (MHPs) have emerged as excellent absorber materials for next generation solar cells owing to their simple solution-processed synthesis and high efficiency. This breakthrough in photovoltaics along with an a ...

AMER CHEMICAL SOC2019

Multiple Charge Transfer States in Donor-Acceptor Heterojunctions with Large Frontier Orbital Energy Offsets

Björn Niesen, Chien-Jen Yang, Xiao Liu

In this work, we demonstrate several organic amorphous donor-acceptor systems that exhibit sub-bandgap features over a more than 2 eV spectral range. An in-depth study of one of these systems, NPB:HAT-CN (NPB is N,N'-di(1-naphthyl)-N,N'-diphenyl-(1,1'-biph ...

2019

Exciton Dynamics in 2D Organic Assemblies for Realization of Next-generation Optoelectronic Devices

Surendra Babu Anantharaman

Supramolecular assemblies of cyanine dye molecules formed by weak van der Waals forces have gained immense attention for their distinct optical properties (high extinction coefficient, narrow absorption and photoluminescence line-width and small Stokes shi ...

EPFL2019

Thermodynamic re-assessment of the Zn–P binary system

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Mahdi Zamani, Simon Robert Escobar Steinvall

Thermodynamic phase diagrams are the cornerstones to develop synthesis of new materials. Zinc phosphide has evolved into a prospective semicontuctor for next generation solar cells, thanks to its abundance and functional properties. Here we derive an optim ...

2019

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