Publications de Olga Syzgantseva

Strain relaxation and multidentate anchoring in n-type perovskite transistors and logic circuits

Mohammad Khaja Nazeeruddin, Olga Syzgantseva

The engineering of tin halide perovskites has led to the development of p-type transistors with field-effect mobilities of over 70 cm2 V-1 s-1. However, due to their background hole doping, these perovskites are not suitable for n-type transistors. Ambipol ...

Nature Portfolio2024

A customized MOF-polymer composite for rapid gold extraction from water matrices

Daniel Teav Sun, Wendy Lee Queen, Li Peng, Olga Syzgantseva, Shuliang Yang, Jun Li

With the fast-growing accumulation of electronic waste and rising demand for rare metals, it is compelling to develop technologies that can promotionally recover targeted metals, like gold, from waste, a process referred to as urban mining. Thus, there is ...

AMER ASSOC ADVANCEMENT SCIENCE2023

Retarding solid-state reactions enable efficient and stable all-inorganic perovskite solar cells and modules

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Farzaneh Fadaei Tirani, Olga Syzgantseva, Hiroyuki Kanda, Yen-Cheng Liu, Bin Ding, Yong Ding, Shunlin Zhang, Cheng Liu

All-inorganic CsPbI3 perovskite solar cells (PSCs) with efficiencies exceeding 20% are ideal candidates for appli-cation in large-scale tandem solar cells. However, there are still two major obstacles hindering their scale-up: (i) the inhomogeneous solid-s ...

AMER ASSOC ADVANCEMENT SCIENCE2023

Defect Suppression in Oriented 2D Perovskite Solar Cells with Efficiency over 18% via Rerouting Crystallization Pathway

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Olga Syzgantseva, Yong Ding, Xuehui Liu, Cheng Liu

Vertically oriented 2D perovskites exhibit promising optoelectronic properties and intrinsic stability, but their photovoltaic application is still limited by the low power conversion efficiency (PCE) compared to 3D analogs. Here, a new crystallization pat ...

2021

Cation optimization for burn-in loss-free perovskite solar devices

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Marius Franckevicius, Sanghyun Paek, Cristina Roldán Carmona, Olga Syzgantseva

Hybrid lead halide perovskites will potentially lead the future energy scenario if highly efficient cells have long-term stability. Here we combine state-of-the art mixed-cation formulations containing formamidinium (FA) and methylammonium (MA), with optim ...

Royal Society of Chemistry2021

Dopant‐Free Hole Transport Materials Afford Efficient and Stable Inorganic Perovskite Solar Cells and Modules

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Kasparas Rakstys, Olga Syzgantseva, Hiroyuki Kanda, Cansu Igci, Bin Ding, Yong Ding, Cheng Liu, Xianfu Zhang

The emerging CsPbI3 perovskites are highly efficient and thermally stable materials for wide-band gap perovskite solar cells (PSCs), but the doped hole transport materials (HTMs) accelerate the undesirable phase transition of CsPbI3 in ambient. Herein, a d ...

Wiley-VCH Verlag GmbH2021

alpha-CsPbI(3)Bilayers via One-Step Deposition for Efficient and Stable All-Inorganic Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Olga Syzgantseva, Yong Ding, Cheng Liu, Xianfu Zhang

The emerging inorganic CsPbI(3)perovskites are promising wide-bandgap materials for application in tandem solar cells, but they tend to transit from a black alpha phase to a yellow delta phase in ambient conditions. Herein, a gradient grain-sized (GGS) CsP ...

Wiley2020

Preparation of Highly Porous Metal-Organic Framework Beads for Metal Extraction from Liquid Streams

Emad Oveisi, Daniel Teav Sun, Wendy Lee Queen, Li Peng, Olga Syzgantseva, Olga Trukhina, Ilia Kochetygov, Shuliang Yang, Anita Justin, Hassan Abedini, Guanchu Lu

Metal-organic frameworks (MOFs) offer great promise in a variety of gas- and liquid-phase separations. However, the excellent performance on the lab scale hardly translates into pilot- or industrial-scale applications due to the microcrystalline nature of ...

AMER CHEMICAL SOC2020

Carrier Lifetimes and Recombination Pathways in Metal-Organic Frameworks

Olga Syzgantseva

Understanding the excited-state charge carrier relaxation in metal-organic frameworks (MOFs) and revealing ways to alternate its rate are of primary importance for the development of novel hybrid photoactive materials with sufficiently long carrier lifetim ...

AMER CHEMICAL SOC2019

Metal Substitution as the Method of Modifying Electronic Structure of Metal–Organic Frameworks

Fatmah Ebrahim, Berend Smit, Christopher Patrick Ireland, Olga Syzgantseva

Targeted modification of electronic structure is an important step in the optimization of metal–organic frameworks (MOFs) for photovoltaic, sensing, and photocatalytic applications. The key parameters to be controlled include the band gap, the absolute ene ...

2019

Pushing the limit of Cs incorporation into FAPbBr3 perovskite to enhance solar cells performances

Mohammad Khaja Nazeeruddin, Valentin Ianis Emmanuel Queloz, Berend Smit, Giulia Grancini, Olga Syzgantseva, Inés Garcia Benito, Albertus Adrian Sutanto

Cation compositional engineering has revealed a powerful design tool to manipulate the perovskite structural and optoelectronic characteristics with a tremendous impact on device performances. Tuning the bandgap by cation and anion compositional mixing, fo ...

2018

Stabilization of the Perovskite Phase of Formamidinium Lead Triiodide by Methylammonium, Cs, and/or Rb Doping

Ursula Röthlisberger, Michael Saliba, Olga Syzgantseva

In this work we perform a computational study comparing the influence of monovalent cation substitution by methylammonium (MA(+)), cesium (Cs+), and rubidium (Rb+) on the properties of formamidinium lead triiodide (FAPbI(3))based perovskites. The relative ...

2017