Author, as appears in the article.: Moustafa, Enas; Marsal, Lluis F; Pallares, Josep
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Marsal Garví, Luis Francisco / Pallarès Marzal, Josep
Keywords: Zno electron transporting layer Thin film deposition techniques Stability of fullerene organic photovoltaics Intermittent spray pyrolysis Electron-transport layer Degradation mechanisms in organic photovoltaics zno electron transporting layer thin film deposition techniques surface-roughness ptb7pc71bm polymer solar-cells performance intermittent spray pyrolysis impact high-efficiency enhancement degradation mechanisms in organic photovoltaics blend acceptors
Abstract: Morphological control of the layers within the bulk heterojunction organic photovoltaics (BHJ-OPVs) is a key feature that governs their performance. In the present work, we demonstrate that zinc oxide-ZnO-interlayers sprayed via the intermittent spray pyrolysis technique, employing a low-concentration precursor solution, can yield inverted BHJ-OPVs as efficient as the standard reported ones using the conventional laboratory-scale spin-coating technique. However, we record a pioneer stability behavior of the fabricated inverted fullerene organic photovoltaics (iF-OPVs) with various sprayed ZnO conditions. Thus, after optimizing the sprayed ZnO interfacial layer morphology for the inverted PTB7-Th:PC70BM devices, by carefully inspecting the interdependence between the sprayed ZnO thin film morphology and the figures of merit of the optimized iF-OPVs, we conducted a distinct analysis on the optical and electronic properties of the fresh and degraded devices using external quantum efficiency measurements and impedance spectroscopy. Hence, we showed that the most proper ZnO microstructural morphology was obtained by spraying 25 running cycles (25R). Remarkably, we observed that 25R-ZnO-based iF-OPV devices showed a stunning stability behavior and maintained 85% of their initial power conversion efficiency even after 16.7 months without encapsulation in a dry nitrogen glovebox, demonstrating an excellent shelf stability. Accordingly, this approach might facilitate the scalability of inverted OPVs for industrial production visibility.
Thematic Areas: Materials science, multidisciplinary Materials chemistry Energy engineering and power technology Energy & fuels Electrochemistry Electrical and electronic engineering Chemistry, physical Chemical engineering (miscellaneous)
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
Link to the original source: https://pubs.acs.org/doi/10.1021/acsaem.1c03994
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Acs Applied Energy Materials. 5 (4): 4390-4403
APA: Moustafa, Enas; Marsal, Lluis F; Pallares, Josep (2022). Significant Stability Improvement of Fullerene Organic Photovoltaics via ZnO Film Modification through the Intermittent Spray Pyrolysis Technique. Acs Applied Energy Materials, 5(4), 4390-4403. DOI: 10.1021/acsaem.1c03994
Article's DOI: 10.1021/acsaem.1c03994
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications