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Nijzink, R.C. (author), Hutton, Christopher (author), Pechlivanidis, Ilias (author), Capell, René (author), Arheimer, Berit (author), Freer, Jim (author), Han, Dawei (author), Wagener, Thorsten (author), McGuire, Kevin (author), Savenije, Hubert (author), Hrachowitz, M. (author)The core component of many hydrological systems, the moisture storage capacity available to vegetation, is impossible to observe directly at the catchment scale and is typically treated as a calibration parameter or obtained from a priori available soil characteristics combined with estimates of rooting depth. Often this parameter is...journal article 2016
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Cai, H. (author), Toffolon, Marco (author), Savenije, Hubert (author)An analytical model is used to investigate the resonant behavior in a semi-closed channel. The main integral quantities of the tidal wave are obtained by means of a linearized one-dimensional model as a function of three dimensionless parameters, representing cross-section convergence, friction and distance to the closed boundary. Arbitrary...journal article 2016
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Hutter, E.M. (author), Gelvez Rueda, M.C. (author), Osherov, Anna (author), Bulović, Vladimir (author), Grozema, F.C. (author), Stranks, Samuel D. (author), Savenije, T.J. (author)Metal halide perovskites such as methylammonium lead iodide (CH<sub>3</sub> NH<sub>3</sub> PbI<sub>3</sub>) are generating great excitement due to their outstanding optoelectronic properties, which lend them to application in high-efficiency solar cells and light-emission devices. However, there is currently debate over what drives the second...journal article 2017
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Koster, Randal D. (author), Betts, Alan K. (author), Dirmeyer, Paul A. (author), Bierkens, Marc (author), Bennett, Katrina E. (author), Déry, Stephen J. (author), Evans, Jason P. (author), Fu, Rong (author), Hernandez, Felipe (author), Ruby Leung, L. (author), Liang, Xu (author), Masood, Muhammad (author), Savenije, Hubert (author), Wang, Guiling (author), Yuan, Xing (author)Recent research in large-scale hydroclimatic variability is surveyed, focusing on five topics: (i) variability in general, (ii) droughts, (iii) floods, (iv) land-atmosphere coupling, and (v) hydroclimatic prediction. Each surveyed topic is supplemented by illustrative examples of recent research, as presented at a 2016 symposium honoring the...journal article 2017
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Zhang, Z. (author), Savenije, Hubert (author)The practical value of the surprisingly simple Van der Burgh equation in predicting saline water intrusion in alluvial estuaries is well documented, but the physical foundation of the equation is still weak. In this paper we provide a connection between the empirical equation and the theoretical literature, leading to a theoretical range of...journal article 2017
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Hutter, E.M. (author), Sutton, Rebecca J. (author), Chandrashekar, Sanjana (author), Abdi-Jalebi, Mojtaba (author), Stranks, Samuel D. (author), Snaith, Henry J. (author), Savenije, T.J. (author)Metal halide perovskites such as methylammonium lead iodide (MAPbI3) are highly promising materials for photovoltaics. However, the relationship between the organic nature of the cation and the optoelectronic quality remains debated. In this work, we investigate the optoelectronic properties of fully inorganic vapour-deposited and spin-coated...journal article 2017
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Hempel, Hannes (author), Savenije, T.J. (author), Stolterfoht, Martin (author), Neu, Jens (author), Failla, M. (author), Paingad, Vaisakh C. (author), Kužel, Petr (author), Zhao, J. (author), Siebbeles, L.D.A. (author)Mobilities and lifetimes of photogenerated charge carriers are core properties of photovoltaic materials and can both be characterized by contactless terahertz or microwave measurements. Here, the expertise from fifteen laboratories is combined to quantitatively model the current-voltage characteristics of a solar cell from such measurements....journal article 2022
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Schilperoort, B. (author), Coenders-Gerrits, Miriam (author), JIMENEZ RODRIGUEZ, C.D. (author), van Hooft, J.A. (author), van de Wiel, B.J.H. (author), Savenije, Hubert (author)Despite the importance of forests in the water and carbon cycles, accurately measuring their contribution remains challenging, especially at night. During clear-sky nights current models and theories fail, as non-turbulent flows and spatial heterogeneity become more important. One of the standing issues is the ‘decoupling’ of the air masses...journal article 2022
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Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai-Tibet PlateauGao, Hongkai (author), Han, Chuntan (author), Chen, Rensheng (author), Feng, Zijing (author), Wang, Kang (author), Fenicia, Fabrizio (author), Savenije, Hubert (author)Increased attention directed at frozen soil hydrology has been prompted by climate change. In spite of an increasing number of field measurements and modeling studies, the impact of frozen soil on hydrological processes at the catchment scale is still unclear. However, frozen soil hydrology models have mostly been developed based on a bottom...journal article 2022
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Guo, Dengyang (author), Bartesaghi, D. (author), Wei, Haotong (author), Hutter, E.M. (author), Huang, Jinsong (author), Savenije, T.J. (author)In view of its band gap of 2.2 eV and its stability, methylammonium lead bromide (MAPbBr<sub>3</sub>) is a possible candidate to serve as a light absorber in a subcell of a multijunction solar cell. Using complementary temperature-dependent time-resolved microwave conductance (TRMC) and photoluminescence (TRPL) measurements, we demonstrate...journal article 2017
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Bartesaghi, D. (author), Slavney, Adam H. (author), Gelvez Rueda, M.C. (author), Connor, Bridget A. (author), Grozema, F.C. (author), Karunadasa, Hemamala I. (author), Savenije, T.J. (author)Double perovskites, comprising two different cations, are potential nontoxic alternatives to lead halide perovskites. Here, we characterized thin films and crystals of Cs<sub>2</sub>AgBiBr<sub>6</sub> by time-resolved microwave conductance (TRMC), which probes formation and decay of mobile charges upon pulsed irradiation. Optical excitation...journal article 2018
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Abdi-Jalebi, Mojtaba (author), Andaji-Garmaroudi, Zahra (author), Cacovich, Stefania (author), Stavrakas, Camille (author), Philippe, Bertrand (author), Richter, Johannes M. (author), Alsari, Mejd (author), Booker, Edward P. (author), Hutter, E.M. (author), Savenije, T.J. (author)Metal halide perovskites are of great interest for various high-performance optoelectronic applications. The ability to tune the perovskite bandgap continuously by modifying the chemical composition opens up applications for perovskites as coloured emitters, in building-integrated photovoltaics, and as components of tandem photovoltaics to...journal article 2018
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Gelvez Rueda, M.C. (author), Hutter, E.M. (author), Cao, Duyen H. (author), Renaud, N. (author), Stoumpos, Constantinos C. (author), Hupp, Joseph T. (author), Savenije, T.J. (author), Kanatzidis, Mercouri G. (author), Grozema, F.C. (author)The optoelectronic properties of hybrid perovskites can be easily tailored by varying their components. Specifically, mixing the common short organic cation (methylammonium (MA)) with a larger one (e.g., butyl ammonium (BA)) results in 2-dimensional perovskites with varying thicknesses of inorganic layers separated by the large organic cation...journal article 2017
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Brenes, Roberto (author), Guo, Dengyang (author), Osherov, Anna (author), Noel, Nakita K. (author), Eames, Christopher (author), Hutter, E.M. (author), Pathak, Sandeep K. (author), Niroui, Farnaz (author), Friend, Richard H. (author), Islam, M. Saiful (author), Snaith, Henry J. (author), Bulović, Vladimir (author), Savenije, T.J. (author), Stranks, Samuel D. (author)Metal halide perovskites are generating enormous excitement for use in solar cells and light-emission applications, but devices still show substantial non-radiative losses. Here, we show that by combining light and atmospheric treatments, we can increase the internal luminescence quantum efficiencies of polycrystalline perovskite films from 1...journal article 2017
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Sriwongsitanon, Nutchanart (author), Gao, H. (author), Savenije, Hubert (author), Maekan, Ekkarin (author), Saengsawang, Sirikanya (author), Thianpopirug, Sansarith (author)With remote sensing we can readily observe the Earth’s surface, but direct observation of the sub-surface remains a challenge. In hydrology, but also in related disciplines such as agricultural and atmospheric sciences, knowledge of the dynamics of soil moisture in the root zone of vegetation is essential, as this part of the vadose zone is the...journal article 2016
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de Boer-Euser, Tanja (author), McMillan, H (author), Hrachowitz, M. (author), Winsemius, H.C. (author), Savenije, Hubert (author)Root zone storage capacity ( S r ) is an important variable for hydrology and climate studies, as it strongly influences the hydrological functioning of a catchment and, via evaporation, the local climate. Despite its importance, it remains difficult to obtain a well-founded catchment representative estimate. This study tests the hypothesis that...journal article 2016
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Kok, D.D. (author), Pande, S. (author), Ortigara, Angela Renata Cordeiro (author), Savenije, Hubert (author), Uhlenbrook, S. (author)Despite Africa controlling the vast majority of the global phosphate it also faces the greatest food shortages - partially due to a lack of access to the fertilizer market. A more accessible source of phosphorus comes from wastewater flows, which is currently lost through the discharge to open surface waters. Analysing the potential...journal article 2018
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Caselli, V.M. (author), Thieme, J. (author), Jöbsis, Huygen J. (author), Phadke, S.A. (author), Zhao, J. (author), Hutter, Eline M. (author), Savenije, T.J. (author)Suitable optoelectronic properties of lead halide perovskites make these materials interesting semiconductors for many applications. Toxic lead can be substituted by combining monovalent and trivalent cations, such as in Cs<sub>2</sub>AgBiBr<sub>6</sub>. However, efficiencies of Cs<sub>2</sub>AgBiBr<sub>6</sub>-based photovoltaics are still...journal article 2022
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Maheswari, S. (author), Savenije, T.J. (author), Renaud, N. (author), Grozema, F.C. (author)Two-dimensional (2D) halide perovskites are a class of materials in which 2D layers of perovskite are separated by large organic cations. Conventionally, the 2D perovskites incorporate organic cations as spacers, but these organic cations also offer a route to introduce specific functionality in the material. In this work, we demonstrate, by...journal article 2018
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Giyanani, A.H. (author), Savenije, F.J. (author), van Bussel, G.J.W. (author)The IEC standards prescribe an inflow wind field based on models with empirical assumptions to perform load calculations. The use of preview wind speed measurements using nacelle-mounted Lidars allows mitigation of structural loads by suggesting appropriate control action. This relationship is affected by uncertainty in site conditions and...journal article 2018