972 citations · 1.3k across the 13 of their papers we have counts for
14 papers
Increasing the Collection Efficiency in Selenium Thin-Film Solar Cells Using a Closed-Space Annealing Strategy
Rasmus Nielsen, Markus Schleuning, Orestis Karalis +5
Elemental selenium is a promising wide-bandgap ( 1.95 eV) photovoltaic material for the next generation of thin-film solar cells. To realize high-efficiency se…
Is CuP a semiconductor, a metal, or a semimetal?
Andrea Crovetto, Thomas Unold, Andriy Zakutayev
Despite the recent surge in interest in CuP for catalysis, batteries, and plasmonics, the electronic nature of CuP remains unclear. Some studies have shown evidence…
Understanding the growth mechanism of BaZrS chalcogenide perovskite thin films from sulfurized oxide precursors
Santhanu Panikar Ramanandan, Andrea Giunto, Elias Z. Stutz +8
Barium zirconium sulfide (BaZrS3) is an earth-abundant and environmentally friendly chalcogenide perovskite with promising properties for various energy conversion applications. Re…
High-Performance Flexible All-Perovskite Tandem Solar Cells with Reduced VOC-Deficit in Wide-Bandgap Subcell
Huagui Lai, Jincheng Luo, Yannick Zwirner +22
Among various types of perovskite-based tandem solar cells (TSCs), all-perovskite TSCs are of particular attractiveness for building- and vehicle-integrated photovoltaics, or space…
Revealing the doping density in perovskite solar cells and its impact on device performance
Francisco Peña-Camargo, Jarla Thiesbrummel, Hannes Hempel +8
Traditional inorganic semiconductors can be electronically doped with high precision. Conversely, there is still conjecture regarding the assessment of the electronic doping densit…
Boron phosphide films by reactive sputtering: Searching for a p-type transparent conductor
Andrea Crovetto, Jesse M. Adamczyk, Rekha R. Schnepf +7
With an indirect band gap in the visible and a direct band gap at a much higher energy, boron phosphide (BP) holds promise as an unconventional p-type transparent conductor. Previo…
Comment on "Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells"
Sandheep Ravishankar, Thomas Unold, Thomas Kirchartz
Ni et al. report minimum bulk trap densities of 10^11 cm-3 and 1-4 orders change in interfacial trap densities derived from drive-level capacitance profiling of lead halide perovsk…
Water adsorption enhances electrical conductivity in transparent p-type CuI
Andrea Crovetto, Hannes Hempel, Marin Rusu +4
CuI has been recently rediscovered as a p-type transparent conductor with a high figure of merit. Even though many metal iodides are hygroscopic, the effect of moisture on the elec…
Upper limit to the photovoltaic efficiency of imperfect crystals
Sunghyun Kim, José A. Márquez, Thomas Unold +1
The Shockley-Queisser (SQ) limit provides a convenient metric for predicting light-to-electricity conversion efficiency of a solar cell based on the band gap of the light-absorbing…
Pathways towards 30% efficient single-junction perovskite solar cells and the role of mobile ions
Jonas Diekmann, Pietro Caprioglio, Moritz H. Futscher +13
Perovskite semiconductors have demonstrated outstanding external luminescence quantum yields, enabling high power conversion efficiencies (PCE). However, the precise conditions to…
High Open Circuit Voltages in pin-Type Perovskite Solar Cells through Strontium Addition
Pietro Caprioglio, Fengshuo Zu, Christian M. Wolff +7
The incorporation of even small amounts of strontium (Sr) into lead-based quadruple cation hybrid perovskite solar cells results in a systematic increase of the open circuit voltag…
The perovskite/transport layer interfaces dominate non-radiative recombination in efficient perovskite solar cells
Martin Stolterfoht, Pietro Caprioglio, Christian M. Wolff +12
Charge transport layers (CTLs) are key components of diffusion controlled perovskite solar cells, however, they can induce additional non-radiative recombination pathways which lim…
Effects of disorder on carrier transport in CuSnS
Lauryn L. Baranowski, Kevin McLaughlin, Pawel Zawadzki +7
In recent years, further improvements in the efficiency of CuZnSn(S,Se) photovoltaic devices have been hampered due to several materials issues, including cation disorder.…
Antisite traps and metastable defects in Cu(In,Ga)Se2 thin-film solar cells studied by screened-exchange hybrid density functional theory
Johan Pohl, Thomas Unold, Karsten Albe
Electronic structure calculations within screened-exchange hybrid density functional theory show that Cu(In,Ga) antisites in both CuInSe2 and CuGaSe2 are localized hole traps, whic…