Publications

Four-terminal Perovskite/CIGS Tandem Solar Cells: Unveiling the Path to >27% in Power Conversion Efficiency
Hossain, I. M.; Feeney, T.; Gharibzadeh, S.; Gota, F.; Singh, R.; Fassl, P.; Mertens, A.; Farag, A.; Becker, J.-P.; Paetel, S.; Ahlswede, E.; Paetzold, U. W.
2022. Solar RRL, 6 (12), Art.Nr. 2200662. doi:10.1002/solr.202200662

Fabrication of patterned, flexible and large-scale Bragg mirrors by inkjet printing
Zhang, Q.; Jin, Q.; Mertens, A.; Huber, R.; Fessler, J.; Hernandez-Sosa, G.; Lemmer, U.
2022. W. Park, A.-J. Attias & B. Panchapakesan (Eds.), Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XIX, 7, SPIE. doi:10.1117/12.2633359

Printed temperature sensor array for high-resolution thermal mapping
Bücher, T.; Huber, R.; Eschenbaum, C.; Mertens, A.; Lemmer, U.; Amrouch, H.
2022. Scientific Reports, 12 (1), 14231. doi:10.1038/s41598-022-18321-6

Fabrication of Microlens Arrays with High Quality and High Fill Factor by Inkjet Printing
Zhang, Q.; Schambach, M.; Schlisske, S.; Jin, Q.; Mertens, A.; Rainer, C.; Hernandez-Sosa, G.; Heizmann, M.; Lemmer, U.
2022. Advanced Optical Materials, 10 (14), Article no: 2200677. doi:10.1002/adom.202200677

Fabrication of Bragg Mirrors by Multilayer Inkjet Printing
Zhang, Q.; Jin, Q.; Mertens, A.; Rainer, C.; Huber, R.; Fessler, J.; Hernandez-Sosa, G.; Lemmer, U.
2022. Advanced Materials, 34 (33), Article no: 2201348. doi:10.1002/adma.202201348

Silver-Nanoparticle-Based Metallodielectric Wavelength-Selective Reflectors for Quantum-Dot-Enhanced White-Light-Emitting Diodes
Chen, J.; Theobald, D.; Shams, A. B.; Jin, Q.; Mertens, A.; Gomard, G.; Lemmer, U.
2022. ACS applied nano materials, 5 (1), 87–93. doi:10.1021/acsanm.1c02885

InO:H-Based Hole-Transport-Layer-Free Tin/Lead Perovskite Solar Cells for Efficient Four-Terminal All-Perovskite Tandem Solar Cells
Moghadamzadeh, S.; Hossain, I. M.; Loy, M.; Ritzer, D. B.; Hu, H.; Hauschild, D.; Mertens, A.; Becker, J.-P.; Haghighirad, A. A.; Ahlswede, E.; Weinhardt, L.; Lemmer, U.; Nejand, B. A.; Paetzold, U. W.
2021. ACS applied materials & interfaces, 13 (39), 46488–46498. doi:10.1021/acsami.1c06457

A Single‐Step Hot Embossing Process for Integration of Microlens Arrays in Biodegradable Substrates for Improved Light Extraction of Light‐Emitting Devices
Jürgensen, N.; Fritz, B.; Mertens, A.; Tisserant, J.-N.; Kolle, M.; Gomard, G.; Hernandez-Sosa, G.
2021. Advanced materials technologies, 6 (2), Art.Nr. 1900933. doi:10.1002/admt.201900933

Phase-Separated Nanophotonic Structures by Inkjet Printing
Donie, Y. J.; Schlisske, S.; Siddique, R. H.; Mertens, A.; Narasimhan, V.; Schackmar, F.; Pietsch, M.; Hossain, I. M.; Hernandez-Sosa, G.; Lemmer, U.; Gomard, G.
2021. ACS nano, 15 (4), 7305–7317. doi:10.1021/acsnano.1c00552

Numerical study on the angular light trapping of the energy yield of organic solar cells with an optical cavity
Lehr, J.; Mertens, A.; Liu, Q.; Martorell, J.; Paetzold, U. W.; Lemmer, U.
2020. Optics express, 28 (25), 37986–37995. doi:10.1364/OE.404969

Planarized and Compact Light Scattering Layers Based on Disordered Titania Nanopillars for Light Extraction in Organic Light Emitting Diodes
Donie, Y. J.; Theobald, D.; Moghadamzadeh, S.; Mertens, A.; Hossain, I. M.; Paetzold, U. W.; Lemmer, U.; Gomard, G.
2020. Advanced optical materials, 9 (14), Art.-Nr.: 2001610. doi:10.1002/adom.202001610

Determination of complex optical constants and photovoltaic device design of all-inorganic CsPbBr₃ perovskite thin films
Yan, W.; Mao, L.; Zhao, P.; Mertens, A.; Dottermusch, S.; Hu, H.; Jin, Z.; Richards, B. S.
2020. Optics express, 28 (10), 15706–15717. doi:10.1364/OE.392246

2D Surface Passivation in Semi-transparent Perovskite Top Solar Cells with Engineered Bandgap for Tandem Photovoltaics
Gharibzadeh, S.; Hossain, I. M.; Fassl, P.; Mertens, A.; Schafer, S.; Rienacker, M.; Wietler, T.; Peibst, R.; Richards, B. S.; Paetzold, U. W.
2020. 2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 15 June - 21 August 2020, online, 1344–1345, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/PVSC45281.2020.9300952

Roll‐to‐Roll Hot Embossing of 1D and 2D Photonic Nanostructures
Habermehl, A.; Brenner, P.; Huber, R.; Mertens, A.; Winkler, F.; Hahn, L.; Guttmann, M.; Eschenbaum, C.; Lemmer, U.
2019. Advanced engineering materials, 21 (8), Article: 1900110. doi:10.1002/adem.201900110

Electron-Beam-Evaporated Nickel Oxide Hole Transport Layers for Perovskite-Based Photovoltaics
Abzieher, T.; Moghadamzadeh, S.; Schackmar, F.; Eggers, H.; Sutterlüti, F.; Farooq, A.; Kojda, D.; Habicht, K.; Schmager, R.; Mertens, A.; Azmi, R.; Klohr, L.; Schwenzer, J. A.; Hetterich, M.; Lemmer, U.; Richards, B. S.; Powalla, M.; Paetzold, U. W.
2019. Advanced energy materials, 9 (12), Article no 1802995. doi:10.1002/aenm.201802995

Organic tandem solar cells: How impedance analyses can improve the quality of external quantum efficiency measurements
Bahro, D.; Wilck, M.; Mertens, A.; Ebenhoch, B.; Hauff, E. von; Colsmann, A.
2018. Progress in photovoltaics, 26 (10), 763–777. doi:10.1002/pip.3015

Comparing roll-to-roll and laser-assisted hot embossing for micro- and nanofabrication
Habermehl, A.; Rakebrandt, J.-H.; Brenner, P.; Huber, R.; Mertens, A.; Guttmann, M.; Winkler, F.; Pfleging, W.; Eschenbaum, C.; Lemmer, U.
2018. Nanoengineering: Fabrication, Properties, Optics, and Devices XV, San Diego, CA, August, 19-23, 2018, 13, Society of Photo-optical Instrumentation Engineers (SPIE). doi:10.1117/12.2321187

Light trapping in thin film silicon solar cells via phase separated disordered nanopillars
Donie, Y. J.; Smeets, M.; Egel, A.; Lentz, F.; Preinfalk, J. B.; Mertens, A.; Smirnov, V.; Lemmer, U.; Bittkau, K.; Gomard, G.
2018. Nanoscale, 10 (14), 6651–6659. doi:10.1039/C8NR00455B

Enhanced thermal stability of organic solar cells comprising ternary D-D-A bulk-heterojunctions
Landerer, D.; Mertens, A.; Freis, D.; Droll, R.; Leonhard, T.; Schulz, A. D.; Bahro, D.; Colsmann, A.
2017. npj flexible electronics, 1 (1), Art.Nr. 11. doi:10.1038/s41528-017-0011-z

Microfluidic surface-enhanced Raman analysis systems by aerosol jet printing: Towards low-cost integrated sensor systems
Habermehl, A.; Eckstein, R.; Strobel, N.; Bolse, N.; Hernandez-Sosa, G.; Mertens, A.; Eschenbaum, C.; Lemmer, U.
2017. 16th IEEE SENSORS Conference, ICSENS 2017, Glasgow, UK, October 29 - November 1, 2017, 1–3, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ICSENS.2017.8234346

A low-cost versatile fluorescence quenching detection system for liquid- and vapor-phase sensing
Bolse, N.; Huber, R.; Habermehl, A.; Eckstein, R.; Hernandez-Sosa, G.; Mertens, A.; Eschenbaum, C.; Lemmer, U.
2017. Proceedings of the IEEE SENSORS 2017, Glasgow, UK, October 29 – November 1, 2017, 1–3, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ICSENS.2017.8234424

Lab-on-Chip, Surface-Enhanced Raman Analysis by Aerosol Jet Printing and Roll-to-Roll Hot Embossing
Habermehl, A.; Strobel, N.; Eckstein, R.; Bolse, N.; Mertens, A.; Hernandez-Sosa, G.; Eschenbaum, C.; Lemmer, U.
2017. Sensors, 17 (10), 2401. doi:10.3390/s17102401

Solar Glasses : A Case Study on Semitransparent Organic Solar Cells for Self-Powered, Smart, Wearable Devices
Landerer, D.; Bahro, D.; Röhm, H.; Koppitz, M.; Mertens, A.; Manger, F.; Denk, F.; Heidinger, M.; Windmann, T.; Colsmann, A.
2017. Energy technology, 5 (11), 1936–1945. doi:10.1002/ente.201700226

Lichtmanagement in organischen Einzel- und Tandemsolarzellen. PhD dissertation
Mertens, A.
2016. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000063009

Probing the Diameter Limit of Single Walled Carbon Nanotubes in SWCNT: Fullerene Solar Cells
Pfohl, M.; Glaser, K.; Graf, A.; Mertens, A.; Tune, D. D.; Puerckhauer, T.; Alam, A.; Wei, L.; Chen, Y.; Zaumseil, J.; Colsmann, A.; Krupke, R.; Flavel, B. S.
2016. Advanced energy materials. doi:10.1002/aenm.201600890

Flower Power: Exploiting Plants’ Epidermal Structures for Enhanced Light Harvesting in Thin-Film Solar Cells
Hünig, R.; Mertens, A.; Stephan, M.; Schulz, A.; Richter, B.; Hetterich, M.; Powalla, M.; Lemmer, U.; Colsmann, A.; Gomard, G.
2016. Advanced optical materials, 4 (10), 1487–1493. doi:10.1002/adom.201600046

Understanding the angle-independent photon harvesting in organic homo-tandem solar cells
Mertens, A.; Mescher, J.; Bahro, D.; Koppitz, M.; Colsmann, A.
2016. Optics Express, 24 (10), A898-A906. doi:10.1364/OE.24.00A898

Understanding the External Quantum Efficiency of Organic Homo-Tandem Solar Cells Utilizing a Three-Terminal Device Architecture
Bahro, D.; Koppitz, M.; Mertens, A.; Glaser, K.; Mescher, J.; Colsmann, A.
2015. Advanced Energy Materials, 5 (22), 1501019. doi:10.1002/aenm.201501019

All-solution processed transparent organic light emitting diodes
Zhang, M.; Höfle, S.; Czolk, J.; Mertens, A.; Colsmann, A.
2015. Nanoscale, 7 (47), 20009–20014. doi:10.1039/c5nr05820a

Illumination angle and layer thickness influence on the photo current generation in organic solar cells: A combined simulative and experimental study
Mescher, J.; Mertens, A.; Egel, A.; Kettlitz, S. W.; Lemmer, U.; Colsmann, A.
2015. AIP Advances, 5 (7), 077188/1–6. doi:10.1063/1.4928074

Simulation of semi-transparent organic tandem solar cells for solar shading
Mescher, J.; Kettlitz, S. W.; Christ, N.; Klein, M. F. G.; Pütz, A.; Mertens, A.; Colsmann, A.; Lemmer, U.
2014. 14th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2014) : Palma de Mallorca, Spain, 1 - 4 September 2014. Ed.: J. Piprek, 165–166, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/NUSOD.2014.6935408

Design rules for semi-transparent organic tandem solar cells for window integration
Mescher, J.; Kettlitz, S. W.; Christ, N.; Klein, M. F. G.; Puetz, A.; Mertens, A.; Colsmann, A.; Lemmer, U.
2014. Organic Electronics: physics, materials, applications, 15 (7), 1476–1480. doi:10.1016/j.orgel.2014.04.011