| Monolithic perovskite/silicon tandem solar cell with> 29% efficiency by enhanced hole extraction A Al-Ashouri, E Köhnen, B Li, A Magomedov, H Hempel, P Caprioglio, ... Science 370 (6522), 1300-1309, 2020 | 1302 | 2020 |
| Beyond bulk lifetimes: Insights into lead halide perovskite films from time-resolved photoluminescence F Staub, H Hempel, JC Hebig, J Mock, UW Paetzold, U Rau, T Unold, ... Physical Review Applied 6 (4), 044017, 2016 | 249 | 2016 |
| Charge transfer rates and electron trapping at buried interfaces of perovskite solar cells I Levine, A Al-Ashouri, A Musiienko, H Hempel, A Magomedov, ... Joule 5 (11), 2915-2933, 2021 | 150 | 2021 |
| Direct Time-Resolved Observation of Carrier Trapping and Polaron Conductivity in BiVO4 M Ziwritsch, S Müller, H Hempel, T Unold, FF Abdi, R Van De Krol, ... ACS Energy Letters 1 (5), 888-894, 2016 | 138 | 2016 |
| Identifying the real minority carrier lifetime in nonideal semiconductors: a case study of kesterite materials CJ Hages, A Redinger, S Levcenko, H Hempel, MJ Koeper, R Agrawal, ... Advanced Energy Materials 7 (18), 1700167, 2017 | 136 | 2017 |
| Understanding Performance Limiting Interfacial Recombination in pin Perovskite Solar Cells J Warby, F Zu, S Zeiske, E Gutierrez‐Partida, L Frohloff, S Kahmann, ... Advanced Energy Materials 12 (12), 2103567, 2022 | 123 | 2022 |
| Enhancing charge carrier lifetime in metal oxide photoelectrodes through mild hydrogen treatment JW Jang, D Friedrich, S Müller, M Lamers, H Hempel, S Lardhi, Z Cao, ... Advanced Energy Materials 7 (22), 1701536, 2017 | 123 | 2017 |
| Low Temperature Synthesis of Stable γ‐CsPbI3 Perovskite Layers for Solar Cells Obtained by High Throughput Experimentation P Becker, JA Márquez, J Just, A Al‐Ashouri, C Hages, H Hempel, M Jošt, ... Advanced Energy Materials 9 (22), 1900555, 2019 | 121 | 2019 |
| Effects of disorder on carrier transport in Cu 2 SnS 3 LL Baranowski, K McLaughlin, P Zawadzki, S Lany, A Norman, H Hempel, ... Physical Review Applied 4 (4), 044017, 2015 | 96 | 2015 |
| Effects of Thermochemical Treatment on CuSbS2 Photovoltaic Absorber Quality and Solar Cell Reproducibility FW de Souza Lucas, AW Welch, LL Baranowski, PC Dippo, H Hempel, ... The Journal of Physical Chemistry C 120 (33), 18377-18385, 2016 | 77 | 2016 |
| The electrical and optical properties of kesterites M Grossberg, J Krustok, CJ Hages, DM Bishop, O Gunawan, R Scheer, ... Journal of Physics: Energy 1 (4), 044002, 2019 | 70 | 2019 |
| Trade‐offs in thin film solar cells with layered chalcostibite photovoltaic absorbers AW Welch, LL Baranowski, H Peng, H Hempel, R Eichberger, T Unold, ... Advanced energy materials 7 (11), 1601935, 2017 | 68 | 2017 |
| Large-grain double cation perovskites with 18 μs lifetime and high luminescence yield for efficient inverted perovskite solar cells E Gutierrez-Partida, H Hempel, S Caicedo-Dávila, M Raoufi, ... ACS Energy Letters 6 (3), 1045-1054, 2021 | 66 | 2021 |
| BaZrS3 Chalcogenide Perovskite Thin Films by H2S Sulfurization of Oxide Precursors JA Márquez, M Rusu, H Hempel, IY Ahmet, M Kölbach, I Simsek, ... The journal of physical chemistry letters 12 (8), 2148-2153, 2021 | 51 | 2021 |
| Predicting solar cell performance from terahertz and microwave spectroscopy H Hempel, TJ Savenjie, M Stolterfoht, J Neu, M Failla, VC Paingad, ... Advanced Energy Materials 12 (13), 2102776, 2022 | 50 | 2022 |
| Minority and Majority Charge Carrier Mobility in Cu2ZnSnSe4 revealed by Terahertz Spectroscopy H Hempel, CJ Hages, R Eichberger, I Repins, T Unold Scientific reports 8 (1), 14476, 2018 | 45 | 2018 |
| Intragrain charge transport in kesterite thin films—Limits arising from carrier localization H Hempel, A Redinger, I Repins, C Moisan, G Larramona, G Dennler, ... Journal of Applied Physics 120 (17), 2016 | 44 | 2016 |
| Grain Boundaries Limit the Charge Carrier Transport in Pulsed Laser Deposited α-SnWO4 Thin Film Photoabsorbers M Kölbach, H Hempel, K Harbauer, M Schleuning, A Petsiuk, K Höflich, ... ACS Applied Energy Materials 3 (5), 4320-4330, 2020 | 35 | 2020 |
| Measurement of charge carrier mobilities in thin films on metal substrates by reflection time resolved terahertz spectroscopy H Hempel, T Unold, R Eichberger Optics Express 25 (15), 17227-17236, 2017 | 35 | 2017 |
| Effect of Na presence during CuInSe2 growth on stacking fault annihilation and electronic properties H Stange, S Brunken, H Hempel, H Rodriguez-Alvarez, N Schäfer, ... Applied Physics Letters 107 (15), 2015 | 35 | 2015 |
