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Hannes Hempel
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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
13712020
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
2572016
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
1682021
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
1422016
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
1392017
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
1312022
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
1252019
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
1252017
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
972015
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
792016
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
712019
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
702017
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
692021
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
532021
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
522022
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
482018
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
452016
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
372015
Slot-die coated triple-halide perovskites for efficient and scalable perovskite/silicon tandem solar cells
K Xu, A Al-Ashouri, ZW Peng, E Köhnen, H Hempel, F Akhundova, ...
ACS Energy Letters 7 (10), 3600-3611, 2022
362022
Pyridine controlled tin perovskite crystallization
G Nasti, MH Aldamasy, MA Flatken, P Musto, P Matczak, A Dallmann, ...
ACS Energy Letters 7 (10), 3197-3203, 2022
362022
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