title: Component integration effects in 4-junction solar cells with dilute nitride 1eV subcell creator: García Vara, Iván creator: Ochoa Gómez, Mario creator: Lombardero Hernández, Iván creator: Cifuentes Baro, Luis creator: Caño Fernández, Pablo creator: Hinojosa Arner, Manuel creator: Rey Llorente, Ignacio del creator: Algora del Valle, Carlos creator: Johnson, A.D. creator: Davies, J.I. creator: Tan, K.H. creator: Loke, W.K. creator: Wicaksono, S. creator: Yoon, S.F. subject: Electronics subject: Physics subject: Telecommunications description: A GaInP/Ga(In)As/GaNAsSb/Ge 4-junction solar cell grown using combined MOVPE+MBE growth is used to analyze the effects during the integration of the subcell components into the full 4J structure. In this preliminary study, the Ge subcell is observed to suffer about 15% Jsc drop and ~50 mV Voc loss at 1-sun, while the Voc of the GaNAsSb subcell drops by as much as ~ 140 mV. The degradation of the Ge and GaNAsSb subcells in the current-matched 4J structure can hinder its efficiency potential to a higher extent than in the GaInP/Ga(In)As/Ge 3J. Besides, high quality GaNAsSb and Ge subcells would still limit the current and require redesigning the top subcells to achieve optimum efficiencies publisher: E.T.S.I. Telecomunicación (UPM) rights: https://creativecommons.org/licenses/by-nc-nd/3.0/es/ date: 2017 type: info:eu-repo/semantics/conferenceObject type: Presentation at Congress or Conference source: IEEE 44th Photovoltaic Specialist Conference (PVSC 2017) | IEEE 44th Photovoltaic Specialist Conference (PVSC 2017) | 25/06/2017 - 30/06/2017 | Washington, DC, USA type: PeerReviewed format: application/pdf language: eng relation: https://ieeexplore.ieee.org/document/8366250 relation: info:eu-repo/grantAgreement/EC/FP7/607153 relation: info:eu-repo/grantAgreement/MINECO//TEC2014-54260-C3-1-P relation: info:eu-repo/grantAgreement/CAM//S2013%20FMAE-2780 relation: info:eu-repo/grantAgreement/MINECO//PCIN-2015-181-C02-02 rights: info:eu-repo/semantics/openAccess relation: info:eu-repo/semantics/altIdentifier/doi/10.1109/PVSC.2017.8366250 identifier: https://oa.upm.es/50978/