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Analysis of institutional authors

Catalan-Gomez, SergioAuthorUlloa, Jose MariaAuthorHierro, AdrianAuthor

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February 9, 2025
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Article

Superoxide radical derived metal-free spiro-OMeTAD for highly stable perovskite solar cells

Publicated to: Nature Communications. 15 (1): 7889- - 2024-09-10 15(1), DOI: 10.1038/s41467-024-52199-4

Authors:

Ye, Linfeng; Wu, Jiahao; Catalan-Gomez, Sergio; Yuan, Li; Sun, Riming; Chen, Ruihao; Liu, Zhe; Ulloa, Jose Maria; Hierro, Adrian; Guo, Pengfei; Zhou, Yuanyuan; Wang, Hongqiang
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Affiliations

Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, ClearWater Bay, Hong Kong, Peoples R China - Author
Northwestern Polytech Univ Shenzhen, Res & Dev Inst, Shenzhen, Peoples R China - Author
Northwestern Polytech Univ, Sch Mat Sci & Engn, Ctr Nano Energy Mat, State Key Lab Solidificat Proc, Xian, Peoples R China - Author
Shaanxi Joint Lab Graphene NPU, Xian, Peoples R China - Author
Univ Politecn Madrid, ISOM, Madrid, Spain - Author
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Abstract

Lithium salt-doped spiro-OMeTAD is widely used as a hole-transport layer (HTL) for high-efficiency n-i-p perovskite solar cells (PSCs), but unfortunately facing awkward instability for commercialization arising from the intrinsic Li+ migration and hygroscopicity. We herein demonstrate a superoxide radicals (center dot O-2(-)) derived HTL of metal-free spiro-OMeTAD with remarkable capability of avoiding the conventional tedious oxidation treatment in air for highly stable PSCs. Present work explores the employing of variant-valence Eu(TFSI)(2) salts that could generate center dot O-2(-) for facile and adequate pre-oxidation of spiro-OMeTAD, resulting in the HTL with dramatically increased conductivity and work function. Comparing to devices adopting HTL with LiTFSI doping, the center dot O-2(-)-derived spiro-OMeTAD increases the PSCs efficiency up to 25.45% and 20.76% for 0.05 cm(2) active area and 6x6 cm(2) module, respectively. State-of-art PSCs employing such metal-free HTLs are also demonstrated to show much-improved environmental stability even under harsh conditions, e.g., maintaining over 90% of their initial efficiency after 1000h of operation at the maximum power point and after 80 light-thermal cycles under simulated low earth orbit conditions, respectively, indicating the potentials of developing metal-free spiro-OMeTAD for low-cost and shortened processing of perovskite photovoltaics.
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Keywords

DeviceEfficientImpacLithium-saltsOxygenP-dopant

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Nature Communications due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 10/135, thus managing to position itself as a Q1 (Primer Cuartil), in the category Multidisciplinary Sciences. Notably, the journal is positioned above the 90th percentile.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-12-21:

  • Open Alex: 1
  • WoS: 53
  • Scopus: 55
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-12-21:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 43.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 40 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 12.
  • The number of mentions on the social network X (formerly Twitter): 5 (Altmetric).
  • The number of mentions in news outlets: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/86103/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 104
  • Downloads: 27
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: China; Hong Kong.

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Awards linked to the item

This work was financially supported by the project of the National Natural Science Foundation of China (52202115 (P.G.) and 52172101 (H.W.)), the Guangdong Basic and Applied Basic Research Foundation, China (2024A1515012325, P.G.), the National Key R&D Program for International Cooperation (2021YFE0115100, H.W.), the Natural Science Foundation of Chongqing, China (CSTB2022NSCQ-MSX1085, P.G.), the Shaanxi Science and Technology Innovation Team (2023-CX-TD-44, H.W.), the Shaanxi Province Key Research and Development Program (2022KWZ-04 and 2021ZDLGY14-08, H.W.), and by Spanish Ministry of Science and Innovation (PID2020-114796RB-C21/AEI/10.13039/501100011033, A.H.). Y. Zhou acknowledges the Excellent Young Scientists Fund (grant no. 52222318) from the National Natural Science Foundation of China and the startup grant support from HKUST. The authors would like to thank the Analytical & Testing Center of Northwestern Polytechnical University and Shaanxi Materials Analysis and Research Center for XRD, XPS and SEM characterizations.
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