Author, as appears in the article.: Ramirez-Como, Magaly; Balderrama, Victor S; Sanchez, Jose G; Sacramento, Angel; Estrada, Magali; Pallares, Josep; Marsal, Lluis F
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: BALDERRAMA VÁZQUEZ, VÍCTOR SAMUEL / Marsal Garví, Luis Francisco / Pallarès Marzal, Josep / Ramirez Como, Magaly / SANCHEZ LÓPEZ, JOSÉ GUADALUPE
Keywords: Zno etl. Zinc oxide Sun Solution-processed small molecule Photovoltaic cells Pfn etl Performance evaluation P-dts(fbtth2)2:pc70bm solar cells Organic solar cells Indium tin oxide Impedance spectroscopy Ii-vi semiconductor materials High-efficiency Electron transport layer Dependence light intensity Buffer layers Absorption zno etl zno thickness solution-processed small molecule recombination pfn etl performance pc70bm p-dts(fbtth2)(2):pc70bm solar cells organic solar cells impedance spectroscopy fabrication electron transport layer donor dependence light intensity acceptor
Abstract: In this work, the use of poly (9,9-bis (30-(N,N-dimethylamino) propyl) -2,7-fluorene) -alt-2,7-(9,9-dioctylfluorene) (PFN) as electron transport layer (ETL) in inverted small molecule solar cells (SM-iOSCs) is analyzed. The optical and electrical characteristics obtained are compared with those obtained for similar SM-iOSCs where the ETL was zinc oxide. The p-DTS(FBTTh2)2 and PC70BM materials are used as donor and acceptor in the bulk heterojunction active layer, respectively for all devices. The photovoltaic devices exhibited a power conversion efficiency of 6.75% under 1 sun illumination. Impedance measurements were used to understand the causes that dominate the performance of the devices. We found that the loss resistance is governed by the PFN layer, which results in a lower fill factor value. Studies of atomic force microscopy, external quantum efficiency, and absorption UV-vis on the active layer have been performed to understand the effects of the charge transport dynamics on the performance of the devices.
Thematic Areas: Engineering, electrical & electronic Electronic, optical and magnetic materials Electrical and electronic engineering Biotechnology
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: josep.pallares@urv.cat lluis.marsal@urv.cat
Author identifier: 0000-0001-7221-5383 0000-0002-5976-1408
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Journal Of The Electron Devices Society. 10 435-442
APA: Ramirez-Como, Magaly; Balderrama, Victor S; Sanchez, Jose G; Sacramento, Angel; Estrada, Magali; Pallares, Josep; Marsal, Lluis F (2022). Solution-Processed Small Molecule Inverted Solar Cells: Impact of Electron Transport Layers. Ieee Journal Of The Electron Devices Society, 10(), 435-442. DOI: 10.1109/JEDS.2022.3165315
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV