This file was created by the Typo3 extension sevenpack version 0.7.16 --- Timezone: CEST Creation date: 2021-05-13 Creation time: 17-31-41 --- Number of references 19 article Adv. Energy Mater. 2021 11 2003446 https://onlinelibrary.wiley.com/doi/10.1002/aenm.202003446 10.1002/aenm.202003446 Yu-HanChang RomainCarron MarioOchoa CarlotaBozal-Ginesta Ayodhya N.Tiwari James R.Durrant LudmillaSteier article Spectrochimica Acta Part B: Atomic Spectroscopy 2020 9 1 171 105926 Refractory transition metal nitrides are attracting attention in many microelectronics research and development fields. Their different applications and desired performances require a precise control of the film thickness and elemental depth profile. This information can be non-destructively obtained combining Grazing-Incidence X-ray Fluorescence (GIXRF) and X-ray Reflectometry (XRR) analysis. GIXRF-XRR joint analysis can be performed following a reference-free approach, which requires the knowledge of the whole experimental system. However, such a rigorous metrological approach cannot be easily applied to in-lab or in-fab tools due to the difficulty to access the various experimental set-up parameters, therefore another approach is needed. In this paper, we used a reference-based method consisting in the use of known standard samples, close in composition and structure with respect to the samples to analyse, to deduce the key parameters of the instrumental setup. These are then used to perform quantitative GIXRF-XRR combined analysis of the samples of interest. We applied this method to titanium tungsten nitride thin films elaborated by Physical Vapour Deposition (PVD). Our results show that the reference-based method, using carefully determined instrumental functions, can meet the requirement for both qualitative and quantitative depth-profiling analysis. The reference-based approach result easier to implement into labs and fabs than the reference-free method. http://www.sciencedirect.com/science/article/pii/S0584854719305920 https://doi.org/10.1016/j.sab.2020.105926 0584-8547 10.1016/j.sab.2020.105926 SimonaTorrengo DianeEichert Y.Mazel M.Bernard YvesMénesguen Marie-ChristineLépy EmmanuelNolot article Energy Environ. Sci. 2020 5 13 13 2047-2055 Cu(In,Ga)Se2 photovoltaic technology has notably progressed over the past years. Power conversion efficiencies above 23% were reached in spite of the polycrystalline nature of the absorber. Although efficiencies are still far from the practical limits, the material quality is approaching that of III–V compounds that yield the most efficient solar cells. The high carrier lifetime, low open circuit voltage deficit and external radiative efficiency in the single-digit percentage range suggest that the next efficiency boost may arise from the implementation of alternative device architectures. In this perspective paper, we describe the current challenges and pathways to enhance the power conversion efficiency of Cu(In,Ga)Se2 solar cells. Specifically, we suggest the use of non-graded absorbers, integration of charge selective contacts and maximization of photon recycling. We examine these concepts by a semi-empirical device modelling approach, and show that these strategies can lead to efficiencies of 29% under the AM1.5 global spectrum. An analysis of whether or not current state-of-the-art Cu(In,Ga)Se2 solar cells already benefit from photon recycling is also presented. 10.1039/D0EE00834F MarioOchoa StephanBuecheler Ayodhya N.Tiwari RomainCarron article Catal. Sci. Technol. 2020 3 4 10 7 2057-2068 Hydrogen features a very high specific energy density and is therefore a promising candidate for clean fuel from renewable resources. Water electrolysis can convert electrical energy into storable and transportable hydrogen gas. Under acidic conditions, platinum is the most active and stable monometallic catalyst for the hydrogen evolution reaction (HER). Yet, platinum is rare and needs to be used efficiently. Here, we report a synthesis concept for colloidal bimetallic platinum–ruthenium and rhodium–ruthenium nanoparticles (PtRuNP, RhRuNP) and their incorporation into ordered mesoporous carbon (OMC) films. The films exhibit high surface area, good electrical conductivity and well-dispersed nanoparticles inside the mesopores. The nanoparticles retain their size, crystallinity and composition during carbonization. In the hydrogen evolution reaction (HER), PtRuNP/OMC catalyst films show up to five times higher activity per Pt than Pt/C/Nafion® and PtRu/C/Nafion® reference catalysts. https://doi.org/10.1039/C9CY02285F 10.1039/C9CY02285F RenéSachse DenisBernsmeier RomanSchmack InesHäusler AndreasHertwig KatrinKraffert JörgNissen RalphKraehnert article Journal of Vacuum Science and Technology A 2020 1 8 38 022401 https://avs.scitation.org/doi/10.1116/1.5133896 10.1116/1.5133896 Ismo T.S.Heikkinen GeorgeKoutsourakis SauliVirtanen MarkoYli-Koski SebastianWood VilleVähänissi EmmaSalmi Fernando A.Castro HeleSavin article ACS Catal. 2020 10 23 14210–14223 https://pubs.acs.org/doi/10.1021/acscatal.0c03800 10.1021/acscatal.0c03800 RenéSachse MikaPflüger Juan-JesúsVelasco-Vélez MarioSahre JörgRadnik MichaelBernicke DenisBernsmeier Vasile-DanHodoroaba MichaelKrumrey PeterStrasser RalphKraehnert AndreasHertwig article EPJ Photovoltaics 2020 11 12 https://www.epj-pv.org/articles/epjpv/full_html/2020/01/pv200013/pv200013.html 10.1051/epjpv/2020010 RamisHertwig ShiroNishikawa MarioOchoa Shih-ChiYang ThomasFeurer EvgeniiaGilshtein Ayodhya N.Tiwari RomainCarron proceedings AIP Conference Proceedings 2019 8 17 2147 050003 https://doi.org/10.1063/1.5123852 10.1063/1.5123852 Ismo T.S.Heikkinen GeorgeKoutsourakis SebastianWood VilleVähänissi Fernando A.Castro HeleSavin article Microscopy and Microanalysis 2019 8 25 Supplement S2 1770-1771 10.1017/S1431927619009589 RenéSachse Vasile-DanHodoroaba AndreasHertwig L.Kotil RalphKraehnert article Progress in Photovoltaics: Research and Applications 2019 6 11 27 8 673-681 10.1002/pip.3142 YamengCao GeorgeKoutsourakis Gavin J. M.Sutton James W. E.Kneller SebastianWood James C.Blakesley Fernando A.Castro article Journal of Analytical Atomic Spectrometry 2019 5 23 34 7 1497-1502 10.1039/C9JA00127A MalteWansleben ClaudiaZech CorneliaStreeck JanWeser ChristophGenzel BurkhardBeckhoff RolandMainz article Science and Technology of Advanced Materials 2019 4 9 20 1 313-323 10.1080/14686996.2019.1586583 Thomas P.Weiss RomainCarron Max H.Wolter JohannesLöckinger EnricoAvancini SusanneSiebentritt StephanBuecheler Ayodhya N.Tiwari Scientific Reports 2019 3 29 9 5385 10.1038/s41598-019-41716-x Thomas P.Weiss BenjaminBissig ThomasFeurer RomainCarron StephanBuecheler Ayodhya N.Tiwari article AIP Advances 2019 2 11 9 025105 The 3D nanostructure of organic materials plays a key role in their performance in a broad range of fields, from life sciences to electronics. However, characterising the functionality of their morphologies presents a critical challenge requiring nanometre resolution in 3 dimensions and methods that do not excessively distort the soft matter during measurement. Here we present scanning probe tomography using a commercial Pt-Ir coated tip and controlling the tip loading force to sequentially characterise and remove layers from the surface of a sample. We demonstrate this process on a sample exhibiting a polymer nanowire morphology, which is typically used for organic electronic applications, and present a tomographic reconstruction of the nanoscale charge transport network of the semi-crystalline polymer. Good electrical connectivity in 3D is demonstrated by directly probing the electrical properties of the inter-nanowire charge conduction. https://doi.org/10.1063/1.5066458 https://doi.org/10.1063/1.5066458 10.1063/1.5066458 1 Ravi ChandraChintala SebastianWood James C.Blakesley PaolaFavia UmbertoCelano KristofParedis WilfriedVandervorst Fernando A.Castro article 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) 2018 11 29 To gain an in-depth understanding of the mechanisms and driving forces responsible for the microstructural changes during the Cu-Se deposition of the three-stage Cu(In,Ga)Se 2 co-evaporation process and its effect on the absorber quality, we have performed a series of in-situ studies as well as complementing ex-situ studies in the recent past. Our studies provide insights into several correlating changes of the structural and physical properties of the absorber layer during Cu-Se deposition or subsequent annealing, such as defect annihilation, stress relaxation, texture changes, and grain growth. In this contribution, we combine these various observations and discuss how they can be explained by a model of abnormal grain growth, driven by differences in the defect densities of neighboring grains. https://doi.org/10.1109/PVSC.2018.8547783 https://doi.org/10.1109/PVSC.2018.8547783 10.1109/PVSC.2018.8547783 1 RolandMainz HelenaStange Christian A.Kaufmann article PhysRevLett.121.123202 Phys. Rev. Lett. 2018 9 21 121 123202 https://link.aps.org/doi/10.1103/PhysRevLett.121.123202 American Physical Society 10.1103/PhysRevLett.121.123202 O. ElGawhary T.Van Mechelen H. P.Urbach article WoodPRAppl2018 Phys. Rev. Applied 2018 8 24 10 2 024038 https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.10.024038 10.1103/PhysRevApplied.10.024038 SebastianWood James C.Blakesley Fernando A.Castro article BeckhoffU2018 Journal of Analytical Atomic Spectrometry 2018 5 7 33 1003-1013 HyMet https://pubs.rsc.org/en/Content/ArticleLanding/2018/JA/C8JA00046H https://arxiv.org/abs/1805.02951 10.1039/C8JA00046H RainerUnterumsberger PhilippHönicke Julien L.Colaux ChrisJeynes MalteWansleben MatthiasMüller BurkhardBeckhoff article sachsé_hertwig_kraehnert_hodoroaba_2018 Microscopy and Microanalysis 2018 24 S1 762–763 Cambridge University Press 10.1017/S1431927618004300 RenéSachse AndreasHertwig RalphKraehnert Vasile-DanHodoroaba