Publications
Published articles since 2010
Marco Antonio Zamalloa-Jara, Miguel Angel Sevillano-Bendezú, Carolin Ulbrich, Gustavo Nofuentes, Rolf Grieseler, Jan Amaru Töfflinger. Solar Energy. 2023. Overirradiance conditions and their impact on the spectral distribution at low- and mid-latitude sites.
https://doi.org/10.1016/j.solener.2023.05.010
M.A. Sevillano-Bendezú, M. Khenkin, G. Nofuentes, J. de la Casa, C. Ulbrich, J.A. Töfflinger. Solar Energy. 2023. Predictability and interrelations of spectral indicators for PV performance in multiple latitudes and climates.
https://doi.org/10.1016/j.solener.2023.04.067
M A Zamudio, A M Carhuavilca, L A Conde, M A García, A E Berastain, J Montes-Romero, J De la Casa, J A Töfflinger and M A Cataño. Journal of Physics: Conference Series. 2023. Conference paper JOPES2022. Development of a low-cost monitoring system for the measurement of DC and AC electrical parameters in grid-connected photovoltaic systems based on IEC standards.
https://doi.org/10.1088/1742-6596/2538/1/012004
G Quispe, J Pérez, L Conde, A Carhuavilca, A Berastain, M García and J A Töfflinger. Journal of Physics: Conference Series. 2023. Conference paper JOPES2022. Low-cost, open-hardware shadow band system for diffuse irradiance measurements.
https://doi.org/10.1088/1742-6596/2538/1/012001
M A García, G R Quispe, M A Zamudio, L A Conde, J R Angulo, A E Berastain and J A Töfflinger. Journal of Physics: Conference Series. 2023. Conference paper JOPES2022. Outdoor I-V characterization of tilted and vertical bifacial PV modules.
https://doi.org/10.1088/1742-6596/2538/1/012002
Sevillano-Bendezú, M.A.; Conde, L.A.; De La Casa, J.; Töfflinger, J.A. Journal of Physics: Conference Series. 2022. Conference paper JOPES2021. Average photon energy assessment based on modelled spectra from the National Solar Radiation Database for Lima, Peru.
https://doi.org/10.1088/1742-6596/2180/1/012018
Angulo, J.R.; Calsi, B.X.; Conde, L.A.; Guerra, J.A.; Muñoz, E.; de la Casa, J.; Töfflinger, J.A. Solar Energy 2022. Estimation of the effective nominal power of a photovoltaic generator under non-ideal operating conditions.
https://doi.org/10.1016/j.solener.2021.12.015
Dulanto, J.; Fengler, S.; Sevillano-Bendezú, M.A.; Grieseler, R.; Guerra, J.A.; Töfflinger, J.A.; Dittrich, T. Thin Solid Films 2022. Hydrogen effects at sputtered Tb-doped AlNxOy:H / c-Si(p) interfaces: A transient surface photovoltage spectroscopy study.
https://doi.org/10.1016/j.tsf.2022.139474
Kinsey, G.S.; Riedel-Lyngskær, N.C.; Miguel, A.-A.; Boyd, M.; Braga, M.; Shou, C.; Cordero, R.R.; Duck, B.C.; Fell, C.J.; Feron, S. et al. Renewable Energy 2022. Impact of measured spectrum variation on solar photovoltaic efficiencies worldwide.
https://doi.org/10.1016/j.renene.2022.07.011
Llontop, P.; Torres, C.E.; Piñeiro, M.; Conde, L.; Tejada, A.; Töfflinger, J.A.; Rumiche, F.; Aragon, F.F.H.; Pacheco-Salazar, D.G.; Grieseler, R.; Korte, L.; Guerra, J.A.. Journal of Physics D: Applied Physics 2022. Indirect excitation and luminescence activation of Tb doped indium tin oxide and its impact on the host's optical and electrical properties.
https://doi.org/10.1088/1361-6463/ac52fc
Espinosa-González, C.A.; Angulo, J.R.; Conde, L.A.; Carhuavilca, A.M.; Alfaro, E.F.; Espinoza, R.; Töfflinger, J.A.; Muñoz-Cerón, E.; De La Casa, J. Journal of Physics: Conference Series. 2022. Conference paper JOPES2021. Is the information provided by free satellite sources suitable for predicting or evaluating the performance of photovoltaic systems in Peru? (In memoriam to Heinrich Berg)
https://doi.org/10.1088/1742-6596/2180/1/012016
Angulo, J.R.; Conde, L.A.; Muñoz, E.; De La Casa, J.; Töfflinger, J.A . Journal of Physics: Conference Series. 2022. Conference paper JOPES2021. PV generator nominal power estimation using a ground sensor and the PVLIB online irradiance database.
https://doi.org/10.1088/1742-6596/2180/1/012005
Berastain, A.E.; Conde, L.A.; Angulo, J.; Carhuavilca, A.M.; García, M.; Sevillano-Bendezú, M.A.; Montes-Romero, J.; De La Casa, J.; Chirinos, L.; Töfflinger, J.A. Journal of Physics: Conference Series. 2022. Conference paper JOPES2021. Resolving challenges of monitoring PV systems: A case study for three 1.5 kW generators in Lima, Peru.
https://doi.org/10.1088/1742-6596/2180/1/012006
Juan Carlos Osorio-Aravena; Juan de la Casa; Jan Amaru Töfflinger; Emilio Muñoz-Cerón. Sustainable Cities and Society 2021. Identifying barriers and opportunities in the deployment of the residential photovoltaic prosumer segment in Chile.
https://doi.org/10.1016/j.scs.2021.102824
Luis A. Conde; José R. Angulo; Miguel Á. Sevillano-Bendezú; Gustavo Nofuentes; Jan A. Töfflinger; Juan de la Casa. Energy 2021. Spectral effects on the energy yield of various photovoltaic technologies in Lima (Peru).
https://doi.org/10.1016/j.energy.2021.120034
M A Zamalloa Jara; H Berg; L A Conde; M A Sevillano-Bendezú; A M Carhuavilca; R Grieseler; J A Töfflinger. Journal of Physics: Conference Series. 2021. Conference paper JOPES2020. Extreme Overirradiance events and their spectral distribution in Lima, Peru.
https://doi.org/10.1088/1742-6596/1841/1/012006
A M Carhuavilca; L A Conde; A E Berastain; J Montes-Romero; W Gosgot; J De la Casa; J A Töfflinger; M A Cataño. Journal of Physics: Conference Series. 2021. Conference paper JOPES2020. Monitoring system based on IEC standards for irradiance and module temperature measurements in photovoltaic systems.
https://doi.org/10.1088/1742-6596/1841/1/012002
B X Calsi; L A Conde; J R Angulo; J Montes-Romero; J A Guerra; J de la Casa; J A Töfflinger. Journal of Physics: Conference Series. 2021. Conference paper JOPES2020. Monitoring versus prediction of the power of three different PV technologies in the coast of Lima-Peru.
https://doi.org/10.1088/1742-6596/1841/1/012001
J Dulanto; M A Sevillano-Bendezú; R Grieseler; J A Guerra; L Korte; T Dittrich; J A Töfflinger. Journal of Physics: Conference Series. 2021. Conference paper JOPES2020. Silicon interface passivation studied by modulated surface photovoltage spectroscopy.
https://doi.org/10.1088/1742-6596/1841/1/012003
Sevillano-Bendezú, M.A.; Dulanto, J.A.; Conde, L.A.; Grieseler, R.; Guerra, J.A.; Töfflinger, J.A. Journal of Physics: Conference Series. 2020. Conference paper JOPES2019. Capacitance voltage curve simulations for different passivation parameters of dielectric layers on silicon.
https://doi.org/10.1088/1742-6596/1433/1/012007
J. R. Angulo, B. X. Calsi, L. A. Conde, E. Muñoz-Cerón, R. Grieseler, J. A. Guerra, J. de la Casa and J. A. Töfflinger. Proceedings of the Solar World Congress 2019, Santiago de Chile. Available online May 1, 2020. Modeling of the Nominal Power of a PV Generator Under Clear and Cloudy sky Conditions.
https://doi.org/10.18086/swc.2019.14.01
L. A. Conde, J. Montes-Romero, A. Carhuavilca, R. Perich, J. A. Guerra, J. Angulo, E. Muñoz, J. A. Töfflinger and J. de la Casa. Proceedings of the Solar World Congress 2019, Santiago de Chile.Available online May 1, 2020. Performance Evaluation and Characterization of Different Photovoltaic Technologies Under the Coastal, Desertic Climate Conditions of Lima, Peru.
https://doi.org/10.18086/swc.2019.16.01
L. A. Conde, J. Montes-Romero, A. Carhuavilca, R. Perich, J. A. Guerra, M. A. Sevillano-Bendezú, B. X. Calsi, J. R. Angulo, J. de la Casa, J. A. Töfflinger. TECNIA Vol.30 N°1 (2020). Puesta en marcha de un laboratorio para la caracterización de tecnologías fotovoltaicas a sol real bajo las condiciones climáticas de Lima.
https://doi.org/10.21754/tecnia.v30i1.835
B. X. Calsi, J. R. Angulo, L. A. Conde, E. Muñoz-Cerón, R. Grieseler, J. A. Guerra, J. de la Casa, J. A. Töfflinger. TECNIA Vol.30 N°1 (2020). Procedimiento del cálculo de la potencia nominal de un generador fotovoltaico.
https://doi.org/10.21754/tecnia.v30i1.834
J. Angulo-Abanto , B. Calsi-Silva, E. Alfaro-Collazos, L. Conde-Mendoza, E. Muñoz-Cerón , R. Grieseler, J. Guerra-Torres, J. Palomino-Töfflinger, R. Espinoza-Paredes, J. De la Casa-Higueras. TECNIA Vol.30 N°1 (2020). Estudio del efecto del polvo y estimación de la potencia nominal en un string fotovoltaico.
https://doi.org/10.21754/tecnia.v30i1.832
R. Perich-Ibáñez, M. Sevillano-Bendezú, J. Montes-Romero, L. Conde-Mendoza, J. Angulo-Abanto, J. de la Casa-Higueras, J. Palomino-Töfflinger. TECNIA Vol.30 N°1 (2020): Estudio de los métodos analíticos para la extracción de parámetros eléctricos de módulos fotovoltaicos de capas delgadas.
https://doi.org/10.21754/tecnia.v30i1.851
M. A. Sevillano-Bendezú, J. A. Dulanto, L. A. Conde, R. Grieseler, J. A. Guerra, J. A. Töfflinger, J. Phys. Conf. Ser.. - (2020): "Capacitance voltage curve simulations for different passivation parameters of dielectric layers on silicon".
https://doi.org/10.1088/1742-6596/1433/1/012007
A. Tejada, L. Montañez, C. Torres, P. Llontop, L. Flores, F. De Zela, A. Winnacker, and J. A. Guerra, Appl. Opt. - (2019): "Determination of the fundamental absorption and optical bandgap of dielectric thin films from single optical transmittance measurements".
https://doi.org/10.1364/AO.58.009585
Y. B Guillen-Baca, C. A. Vilca Huayhua, K. J. Paz Corrales, A. F. Carlos-Chilo, F. F. H. Aragón, M. C. Mathpal, S. W. Da Silva, J. A. H. Coaquira, W. Sucasaire, J. A. Guerra and D. Pacheco-Salazar J. Phys. D: Appl. Phys - (2019): "Lattice strain effects on the structural properties and band gap tailoring in columnarly grown Fe-doped SnO2 films deposited by DC sputtering".
Link: https://doi.org/10.1088/1361-6463/ab3968
J. A. Guerra, A. Tejada, J. A. Töfflinger, R. Grieseler and L. Korte, J. Phys. D: Appl. Phys - (2019): "Band-fluctuations model for the fundamental absorption of crystalline and amorphous semiconductors: a dimensionless joint density of states analysis".
Link: https://doi.org/10.1088/1361-6463/aaf963
K. Tucto, W. Aponte, J. Dulando, J. A. Töfflinger, J. A. Guerra and R. Grieseler Applied Optics (2019): "Combinatorial approach toward optimization of the light emission intensity of AlOxNy:Yb3+ thin films". Link: https://doi.org/10.1364/AO.58.003097
L. F. Flores, K. Tucto, J. A. Guerra, J. A. Töfflinger, E. Serquen, A. Osvet, M. Batentshuk, A. Winnacker, R. Grieseler and R. Weingärtner Optical Materials (2019): "Luminescence properties of Yb3+ - Tb3+ co-doped amorphous silicon oxycarbide thin films".
Link: https://doi.org/10.1016/j.optmat.2019.04.003
S. Braunger, L. E. Mundt, C. Wolff, M. Mews, C. Rehermann, M. Jost, A. Tejada, D. Eisenhauer, C. Becker, J. A. Guerra, E. L. Unger, L. Korte, D. Neher, M. C. Schubert, B. Rech and S. Albrecht, The Journal of Physical Chemistry - (2018): "On the Appearence of Wrinkled Morphology for CsxFA1-xPb(I1 −yBry)3 Perovskite Compositions and the Impact on Solar Cell Performance".
Link: https://pubs.acs.org/doi/10.1021/acs.jpcc.8b06459
A. Tejada, S. Braunger, L. Korte, S. Albrecht, B. Rech and J.A. Guerra, Journal of Applied Physics 123 (2018): "Optical characterization and bandgap engineering of flat and wrinkle-textured FA0.83Cs0.17Pb(I1 − xBrx)3 perovskite thin films".
Link: https://doi.org/10.1063/1.5025728
N. Preissler, D. Amkreutz, J. Dulanto, J. A. Töfflinger, C. T. Trinh, M. Trahms, D. Abou‐Ras, H. Kirmse, R. Weingärtner, B. Rech and R. Schlatmann, Phys. Status Solidi A. (2018): "Passivation of Liquid‐Phase Crystallized Silicon With PECVD‐SiNx and PECVD‐SiNx/SiOx".
Link: https://doi.org/10.1002/pssa.201800239
J.A. Guerra, A. Tejada, L. Korte, L. Kegelmann, J. A. Töfflinger, S. Albrecht, B. Rech and R. Weingärtner, Journal of Applied Physics 121, 173104 (2017): "Determination of the complex refractive index and optical bandgap of CH3NH3PbI3 thin films".
Link: https://doi.org/10.1063/1.4982894
N. Preissler, J. A. Töfflinger, O. Gabriel, P. Sonntag, D. Amkreutz, B. Stannowski, B. Rech and R. Schlatmann, Progress in Photovoltaics: Research and Applications 25: 515–524, (2017): "Passivation at the interface between liquid-phase crystallized silicon and silicon oxynitride in thin film solar cells".
Link: http://dx.doi.org/10.1002/pip.2852
K. Tucto, L. Flores, J. Guerra , J. Töfflinger, J. Dulanto, R. Grieseler, A. Osvet, M. Batentschuk and R. Weingärtner, MRS Advances, Vol. 2, Issue 52 (Electronic Devices and Materials), 2989-2995, (2017): "Production and Characterization of Tb3+/Yb3+ Co-Activated AlON Thin Films for Down Conversion Applications in Photovoltaic Cells".
Link: https://doi.org/10.1557/adv.2017.478
K. Tucto, L. Flores, J. A. Guerra, R. Grieseler, T. Kups, J. Pezoldt, A. Osvet, M. Batentschuk and R. Weingärtner. Mater Sci. Forum 890, 299-302 (2017). Doi:10.4028/MSF.890.299: "Effect of Post-annealing Treatment on the Structure and Luminescence Properties of AIN:Tb 3+ Thin Films Prepared by Radio Frequency Magnetron Sputtering".
Link: www.scientific.net/MSF.890.299
J. A. Guerra, F. De Zela, K. Tucto, L. Montañez, J. A. Töfflinger, A. Winnacker and R. Weingärtner J. Phys. D: Appl. Phys. 49 (2016) 375104: "Effect of thermal annealing treatments on the optical activation of Tb3+ doped amorphous SiC:H thin films".
Link: https://doi.org/10.1088/0022-3727/49/37/375104
N. Preissler, J. A. Töfflinger, I. Shutsko, O. Gabriel, S. Calnan, B. Stannowski, B. Rech, R. Schlatmann, Phys. Status Solidi A 213, No. 7, 1697–1704 (2016), DOI 10.1002/pssa.201532957: "Interface passivation of liquid-phase crystallized silicon on glass studied with high-frequency capacitance-voltage measurements".
Link: http://dx.doi.org/10.1002/pssa.201532957
J. A. Guerra, J. R. Angulo, S. Gomez, J. Llamoza, L. M. Montañez, A. Tejada, J. A. Töfflinger, A. Winnacker and R. Weingärtner, J. Phys. D: Appl. Phys. 49 (2016) 195102: "The Urbach focus and optical properties of amorphous hydrogenated SiC thin films".
Link: http://iopscience.iop.org/0022-3727/49/37/375104
L. Montañez, J. A. Töfflinger, J. A. Guerra, A. Ben Or, F. De Zela, R.Weingärtner, Proceedings of the 31st European Photovoltaic Solar Energy Conference and Exhibition, 969 - 971 (2015): "Optical and Passivation Characterization of Amorphous and Poly-Crystalline AlN Layers".
https://doi.org/10.4229/EUPVSEC20152015-2CV.4.23
J.A. Guerra, L. Montañez, F. De Zela, A. Winnacker and R. Weingärtner, Phys. Status. Solidi C (2015) 12 (8) "Thermal activation and temperature dependent PL and CL of Tb doped amorphous AlN and SiN thin films" pp. 1183-1186.
· S. Möckel: “Optical characterisation of amorphous Aluminum-Nitride thin layers.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2011.
· M. Shiefbahn: “Electrical caracterization of amorphous Aluminum-Nitride thin layers.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2011.
· S. Kreppel: “The effect of hydrogen doping on the optical and vibrational properties of SiC thin films.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2011.
· A. Winterstein: “Einfluss von Ausheilverfahren auf die optische Bandlücke amorpher (SiC)1‑x(AlN)x Filme an Hand von Transmissionsmessungen.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2010.
· T. Hupfer: “Elektrische Charakterisierung von amorphen (SiC)1-x(AlN)x Filmen.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2010.
· M. Steidl: “Bestimmung optischer Konstanten eines Dünnfilms mit Hilfe optischer Transmissionsmessungen und Erstellen einer Sputterratenverteilung für AlN.”, Institut für Werkstoffwissenschaften VI der Universität Erlangen-Nürnberg, 2010.
· R. Grieseler: “Aufbau und Automatisierung eines Hallmessplatzes zur Bestimmung des spezifischen Widerstandes und des Hall-Koeffizienten amorpher Halbleiterschichten mit Hilfe der van-der-Pauw-Methode.”, Fakultätsübergreifendes Institut für Werkstofftechnik der Technischen Universität Ilmenau, 2008
· S. Woetzel: “Aufbau und Inbetriebnahme eines Augerelektronenspektroskopie-messplatzes zur Charakterisierung dünner Halbleiterschichten.”, Fakultätsübergreifendes Institut für Werkstofftechnik der Technischen Universität Ilmenau, 2008.
· D. Lorenz: “Bestimmung der Abstrahlcharakteristik und Optimierung einer Magnetron-sputterquelle zur Herstellung von funktionalen Dünnschichten.”, Fakultät für Maschinenbau der Technischen Universität Ilmenau, 2008.
J. A. Guerra, F. Benz, L. Montañez, R. Grieseler, P. Schaaf, F. De Zela, A. Winnacker, H. P. Strunk, and R. Weingärtner, Mater. Res. Soc. Proc. Vol. 1571 (2013):"Concentration Quenching of Tb3+ Doped SiC:H and AlN Thin Films in Photoluminescence and Cathodoluminescence Measurements".
J. A. Guerra, L. Montañez, F. De Zela, A. Winnacker, and R. Weingärtner, Mater. Res. Soc. Proc. Vol. 1536 (2013):"On the Origin of the Urbach Rule and the Urbach Focus".
F. Benz, J. A. Guerra, Y. Weng, R. Weingärtner, and H. P. Strunk, Phys. Stat. Sold. C 10, 109 (2013):"How to describe concentration quenching in rare earth doped semiconductors".
J. A. Guerra, F. Benz, A. R. Zanatta, H. P. Strunk, A. Winnacker, and R. Weingärtner, Phys. Stat. Sold. C 10, 68 (2013):"Concentration quenching and thermal activation of the luminescence from terbium-doped a-SiC:H and c-AlN thin films".
F. Benz, J. A. Guerra, Y. Weng, A. R. Zanatta, R. Weingärtner, and H. P. Strunk, J. Lumin. 137, 73 (2013):"Concentration quenching of the green photoluminescence from terbium ions embedded in AlN and SiC matrices".
J. A. Guerra, L. Montañez, O. Erlenbach, G. Galvez, F. De Zela, A. Winnacker, and R. Weingärtner, J. Phys.: Conf. Ser. 274, 012113 (2011):"Determination of the optical bandgap and disorder energies of thin amorphous SiC and AlN films produced by radio frequency magnetron sputtering".
G. Gálvez de la Puente, S. Zitzlsberger, J. A. Guerra Torres, O. Erlenbach, R. Weingärtner, F. De Zela, and A. Winnacker, J. Phys.: Conf. Ser. 274, 012116 (2011):"Emission pattern of an aluminium nitride target for radio frequency magnetron sputtering".
R. Weingärtner, J.A. Guerra Torres, O. Erlenbach, G. Gálvez de la Puente, F. De Zela, and A. Winnacker, Mater. Science Eng. B 174, 114 (2010):"Bandgap engineering of the amorphous wide bandgap semiconductor (SiC)1−x(AlN)x doped with terbium and its optical emission properties".
G. Gálvez de la Puente, J. A. Guerra Torres, O. Erlenbach, M. Steidl, R. Weingärtner, F. De Zela, and A. Winnacker, Mater. Science Eng. B 174, 127 (2010):"Determination of the sputter rate variation pattern of a silicon carbide target for radio frequency magnetron sputtering using optical transmission measurements".
J. A. Guerra, A. Winterstein, O. Erlenbach, G. Gálvez, F. De Zela, R. Weingärtner, and A. Winnacker, Mater. Science Forum Vols. 645-648, 263 (2010):"Determination of the optical bandgap of thin amorphous (SiC)1-x(AlN)x films".
G. Gálvez de la Puente, O. Erlenbach, J. A. Guerra Torres, T. Hupfer, M. Steidl, F. De Zela, R. Weingärtner, and A. Winnacker, Mater. Science Forum Vols. 645-648, 1199 (2010):"Quality control and electrical properties of thin amorphous (SiC)1-x(AlN)x films produced by radio frequency dual magnetron sputtering".
O. Erlenbach, G. Gálvez, J. A. Guerra, F. De Zela, R. Weingärtner, and A. Winnacker, Mater. Science Forum Vols. 645-648, 459 (2010):"Thermal activation and cathode-luminescence measurements of Tb3+-doped a‑(SiC)1‑x(AlN)x thin films".
Studienarbeiten: