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Vapor Transport Deposition of Methylammonium Iodide for Perovskite Solar Cells

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Detection of voltage pulse width effect on charge accumulation in PSCs EFISHG measurement

Mohammad Khaja Nazeeruddin, Sanghyun Paek, Zubair Ahmad

We report the effect of applied pulse width on charge accumulation in triple cation perovskite solar cells (PSCs) during the Electric Field Induced Second Harmonic Generation (EFISHG) measurements. The PSCs were prepared in the n-i-p structure using the la ...

ELSEVIER2020

Optimizing the Atomic Layer Deposition of Alumina on Perovskite Nanocrystal Films by Using O-2 As a Molecular Probe

Raffaella Buonsanti, Anna Loiudice, Seryio Saris, Sanduni Thiyaga Pathiraja Mudalige Dona, Valerie Anne Niemann

Encapsulation methods have shown to be effective in imparting improved stability to metal-halide perovskite nanocrystals (NCs). Atomic layer deposition (ALD) of metal oxides is one of the promising approaches for such encapsulation, yet better control on t ...

WILEY-V C H VERLAG GMBH2020

Atomic Layer Deposition on Dispersed Materials in Liquid Phase by Stoichiometrically Limited Injections

Jeremy Luterbacher, Benjamin Pierre Le Monnier, Farzaneh Talebkeikhah, Frederick Georges Wells

Atomic layer deposition (ALD) is a well‐established vapor‐phase technique for depositing thin films with high conformality and atomically precise control over thickness. Its industrial development has been largely confined to wafers and low‐surface‐area ma ...

2019

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A symmetrical trimethine indocyanine dye chromophore was modified with the bistriflylimide anion to study the changes in Coulomb interactions, thermal stability and the volatility of the organic salt. The bulky bistriflylimide anion minimizes electrostatic ...

2019

Thin film metal-insulator-metal capacitors with undoped HfO2 as the insulator are fabricated by sputtering from ceramic targets and subsequently annealed. The influence of film thickness and annealing temperature is characterized by electrical and structur ...

WILEY2019

Perovskite solar cells have undergone increase in power-conversion efficiencies at an unprecedented pace. Since their emergence in academic research in 2009, thousands of scientific papers have been published on their unique properties, variations cell arc ...

EPFL2018

Fundamentals of perovskite formation for photovoltaics

Amita Ummadisingu

Perovskite solar cells have become strong contenders in the arena of photovoltaics due to the stunning rise in their efficiency from 3 % to over 20 % in just seven years. In this time, numerous device architectures and thin film deposition methods have bee ...

EPFL2018

Efficient Planar Perovskite Solar Cells Using Passivated Tin Oxide as an Electron Transport Layer

Mohammad Khaja Nazeeruddin, Marco Calizzi, Sanghyun Paek, Yonghui Lee, Kyung Taek Cho, Aron Joel Huckaba

Planar perovskite solar cells using low-temperature atomic layer deposition (ALD) of the SnO2 electron transporting layer (ETL), with excellent electron extraction and hole-blocking ability, offer significant advantages compared with high-temperature depos ...

Wiley2018

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Atomic layer deposition (ALD) and chemical layer deposition (CLD) are techniques to produce conformal, atomically precise overcoats for materials in gas and liquid phases, respectively. Although it is a challenge to explicitly model ALD/CLD dynamics becaus ...

2018

The evaporation flux J(ev)(H2O) of H2O from HCl-doped typically 1.5 mu m or so thick vapor-deposited ice films has been measured in a combined quartz crystal microbalance (QCMB)-residual gas mass spectrometry (MS) experiment. J(ev)(H2O) has been found to s ...

COPERNICUS GESELLSCHAFT MBH2018