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Yi Zhang

Cette personne n’est plus à l’EPFL

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Publications associées (701)

Foldable Hole-Transporting Materials for Merging Electronic States between Defective and Perfect Perovskite Sites

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Kasparas Rakstys, Yi Zhang, Hiroyuki Kanda, Ruiyuan Hu, Jianxing Xia, Qurat Ul Ain

Defective and perfect sites naturally exist within electronic semiconductors, and considerable efforts to reduce defects to improve the performance of electronic devices, especially in hybrid organic-inorganic perovskites (ABX(3)), are undertaken. Herein, ...

Wiley-V C H Verlag Gmbh2023

Hydrothermal Deposition of UV-Absorbing Passivation Layers for Efficient and Stable Perovskite Solar Cells

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang

Despite recent increases in perovskite solar cell (PSC) efficiencies, long-term stability remains a barrier to manufacturing and marketing. SnO2 electron transport layers enable the low-temperature processing of planer n-i-p structured PSCs. However, ultra ...

WILEY2023

Measurement of the Z boson production cross-section in proton-lead collisions at root(NN)-N-s=8.16 TeV

Ian William Marison, Aurelio Bay, François Fleuret, Eliazar Rodriguez Garcia, Fabiano Colpo, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Xiaoqiang Wang, Valérie Jeanne Thérèse Renaudin-Schouler, I-Chun Lin, Mingkui Wang, Frédéric Blanc, Lesya Shchutska, Basil Andrew Stansfield Davis, Liang Sun, Marco Guarise, Chao Wang, Achille Mauri, Mercedes Hannelore Rittmann-Frank, Xiaoqing Zhou, Craig Matthew Smith, Huizhen Liu, Yang Zou, Chia-Chun Chen, Simone Meloni, Chunmin Zhang, Remy Jean Henry Albrecht, Maxim Karpov, Michael Thompson McCann, Yi Zhang, Arnout Lodewijk M Beckers, John Martin Kolinski

This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of root(NN)-N-s ...

Springer Nature2023

Co-deposition of hole-selective contact and absorber for improving the processability of perovskite solar cells

Mohammad Khaja Nazeeruddin, Yi Zhang

Simplifying the manufacturing processes of renewable energy technologies is crucial to lowering the barriers to commercialization. In this context, to improve the manufacturability of perovskite solar cells (PSCs), we have developed a one-step solution-coa ...

NATURE PORTFOLIO2023

Steric hindrance driven passivating cations for stable perovskite solar cells with an efficiency over 24%

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang, Jianxing Xia

In this work, a series of passivating salts for perovskite solar cells (PSCs) based on ortho-methylammonium iodide functional units are molecularly engineered to study the steric hindrance driven passivation effect. The incorporation of fluorine atoms into ...

Royal Society of Chemistry2023

Photovoltaic devices containing cyclobutane-based hole transport materials

Mohammad Khaja Nazeeruddin, Yi Zhang

The teachings herein relate to hole transport compounds containing cyclobutyl moieties that can be made into organic hole conductors and hole transport materials. Furthermore, optoelectronic and photoelectrochemical devices, in particular photovoltaic devi ...

2023

Amplitude analysis of the D+-> pi(-)pi(+)pi(+) decay and measurement of the pi(-)pi(+) S-wave amplitude

An amplitude analysis of the D+-> (-)pi(+)pi(+) decay is performed with a sample corresponding to 1.5 fb(-1) of integrated luminosity of pp collisions at a centre-of-mass energy root s = 8 TeV collected by the LHCb detector in 2012. The sample contains app ...

Springer Nature2023

Search for relativistic fractionally charged particles in space

Songmei Wu, Johan Juul Chang, Zhirui Xu, Jennifer Maria Frieden, Siyuan Wang, Junqiu Liu, Jian Wang, Yi Zhang, Yong Yang, Hao Liu, Ming Gao, Cheng Zhao, Xuan Li, Arshia Ruina, Chiara Perrina, Andrii Kotenko, Wenyu Zhang, Xiao Wang, Yi Wang, Wei Li, Jie Chen, Shuai Liu, Yao Zhang

More than a century after the performance of the oil drop experiment, the possible existence of fractionally charged particles (FCPs) still remains unsettled. The search for FCPs is crucial for some extensions of the Standard Model in particle physics. Mos ...

American Physical Society2022

The Forward Physics Facility at the High-Luminosity LHC

Martin Bauer, Alexey Boyarsky, Enrico Bertuzzo, Lesya Shchutska, Wenjing Wu, Karan Kumar, Francesco Cerutti, Wei Liu, Patrick Foldenauer, Yi Zhang, Saurabh Nangia, Raffaele Tito D'Agnolo, Emanuele Copello, Ji Hyun Kim, Yiming Li, Zheng Wang, Jing Li

High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located s ...

2023

Constraining the baryonic feedback with cosmic shear using the DES Year-3 small-scale measurements

Eduardo Sanchez, Binglun Yin, Yi Zhang, Jonathan Andrew Blazek

We use the small scales of the Dark Energy Survey (DES) Year-3 cosmic shear measurements, which are excluded from the DES Year-3 cosmological analysis, to constrain the baryonic feedback. To model the baryonic feedback, we adopt a baryonic correction model ...

Oxford Univ Press2022

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

Jean-François Carlin, Rakesh Chawla, Richard Pitts, Arvind Shah, Ian Smith, Randoald Müller, Carlos Andres Peña Reyes, Jung Eung Park, Thomas Mountford, Matthias Finger, Jin Won Seo, Johannes Steen, Josef Andreas Schuler, Olivier Martin, Melody Swartz, Kyumin Lee, Hoang-Trang Lam, Maria Isabel Cordero Campana, Ananda Sankar Roy, Bertrand François, Yogesh Singh Chauhan, Xiaoqiang Wang, Miguel Fernández Ruiz, Sun Hee Kim, Jian Zhao, João Miguel das Neves Duarte, Justin Terence Notz Pekkanen, Joo Yeon Kim, Alexis Kalogeropoulos, Jae-Woo Choi, Pedro Camilo de Oliveira e Silva, Cristopher Ariel Zeballos Avila, Myun Sik Kim, Chao Wang, Yixing Chen, Aravind Kumar Chandiran, Tian Cheng, Ana Margarida Da Costa Ricardo, , , , , , , , , , , ,

Ultraviolet Filtration Passivator for Stable High-Efficiency Perovskite Solar Cells

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang

Although the published values of power conversion efficiency (PCE) have increased continuously in recent years for perovskite solar cells (PSCs), improvements in the stability and performance of PSCs with conventional TiO2 or SnO2 electron transport layers ...

AMER CHEMICAL SOC2022

Area-Scalable Zn2SnO4 Electron Transport Layer for Highly Efficient and Stable Perovskite Solar Modules

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang, Hiroyuki Kanda, Jianxing Xia

The development of a scalable chemical bath deposition (CBD) process facilitates the realization of electrontransporting layers (ETLs) for large-area perovskite solar modules (PSMs). Herein, a method to prepare a uniform and scalable thick Zn2SnO4 ETL by C ...

AMER CHEMICAL SOC2022

Updates on CEA Design and Experimental Activities on EU DEMO TF System

Yi Zhang

In the framework of EU design activities for dimensioning the future fusion DEMOnstration reactor (DEMO), in-depth analyses were conducted in EUROfusion context, aiming to define the design of the DEMO magnets system. For the last DEMO baseline, CEA has pr ...

IEEE Institute of Electrical and Electronics Engineers2022

Aging investigation of the latest standard dual power modules using improved interconnect technologies by power cycling test

Yi Zhang, Rui Wu

The latest standard "New Dual" power module has been developed for both silicon and silicon-carbide devices to meet the increasing demands in high reliability and high temperature power electronic applications. Due to the new package is just starting to re ...

PERGAMON-ELSEVIER SCIENCE LTD2022

High-efficiency perovskite photovoltaic modules achieved via cesium doping

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Andreas Züttel, Yi Zhang, Mo Li, Jianxing Xia

Perovskite solar modules have been attracting increasing attention due to their market potential, yet publications concerned with theintrinsic scale-up potential of different perovskite compositions remain relatively scarce. On the other hand, while great ...

ELSEVIER SCIENCE SA2022

Mixed cation 2D perovskite: a novel approach for enhanced perovskite solar cell stability

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang, Hiroyuki Kanda, Mousa Abdulla M E Abuhelaiqa, Bin Ding, Yong Ding

The integration of thin 2D perovskite layers at the 3D PVK/HTL interface is known to improve the power conversion efficiency and stability of perovskite solar cells (PSCs). In this work, we report a novel approach consisting of mixing two alkyl-based catio ...

ROYAL SOC CHEMISTRY2022

Asymmetrically Substituted 10H,10 ' H-9,9 '-Spirobi[acridine] Derivatives as Hole-Transporting Materials for Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yi Zhang, Hiroyuki Kanda, Nadja Isabelle Desiree Klipfel, Hobeom Kim, Bin Ding, Jianxing Xia

Hole-transporting materials (HTMs) based on the 10H, 10 ' H-9,9 '-spirobi [acridine] core (BSA50 and BSA51) were synthesized, and their electronic properties were explored. Experimental and theoretical studies show that the presence of rigid 3,6-dimethoxy- ...

Wiley-VCH Verlag GmbH2022

Bifunctional additive 2-amino-3-hydroxypyridine for stable and high-efficiency tin-lead perovskite solar cells

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Yi Zhang, Bing Zhang

Tin-lead (Sn-Pb) mixed perovskite has received widespread attention due to its suitable band gap width and high optical absorption coefficients. However, the power conversion efficiency (PCE) of Sn-Pb mixed perovskite solar cells (PSCs) is still low due to ...

Royal Society of Chemistry2022

Ultrarapid crystallization of low-dimensional perovskite with excellent stability for future high-throughput fabrication

Mohammad Khaja Nazeeruddin, Yi Zhang, Xiaopeng Zheng, Xuehui Liu, Min Chen

Perovskite solar cells (PSCs) as an emerging photovoltaic technique have achieved exceptional power conversion efficiency (PCE) up to 25.7% after fast development over the past decade. But currently some critical issues are still not well addressed in term ...

ELSEVIER2022

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Christoph Ernst René Schäfer

Wei Sun

Sebastian James Davis

Varun Sharma

Dalziel Joseph Wilson

Adrien Alexis Paul Chauvet

Alberto Hernando de Castro

Hoài-Minh Nguyên

Muhammad Aiman Bin Rahmanudin Hamdan

Chia-Chun Chen

Yi Zhang

Adam Wade Marcus

The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e(+/-)mu(-/+), e(+)e(-), or mu(+)mu(-)). The measurement is performed using 138 ...

Springer Nature2022