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Analysis of institutional authors

Wu, HengAuthorMoncusi, Laia MarinAuthorMartinez-Ferrero, EugeniaAdapterPalomares, EmilioCorresponding Author

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August 26, 2025
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Early Access

Co-Sensitized Solar Cell Achieves 13.7% Efficiency with Bis-Hexylthiophene Dyes

Publicated to: Advanced Science. e09116-e09116 - 2025-08-18 (), DOI: 10.1002/advs.202509116

Authors: Wu H; Moncusí LM; Li J; Martinez-Ferrero E; Wang P; Palomares E

Affiliations

Catalan Inst Res & Adv Studies ICREA, Passeig Lluis Co, Barcelona 08010, Spain - Author
Hainan Normal Univ, Sch Chem & Chem Engn, Key Lab Electrochem Energy Storage & Energy Conver, Key Lab Electrochem Energy Storage & Light Energy, Haikou 571158, Peoples R China - Author
Inst Chem Res Catalonia ICIQ, CERCA, Avinguda Paisos Catalans, Tarragona 43007, Spain - Author
Univ Rovira & Virgili URV, Dept Engn Elect Elect & Automat, Avinguda Paisos Catalans, Tarragona 43007, Spain - Author
Zhejiang Univ, Dept Chem, State Key Lab Silicon & Adv Semicond Mat, Hangzhou 310058, Peoples R China - Author
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Abstract

Efficient anti-aggregation and superb light harvesting in the combination of large and narrow energy gap photosensitizers play a crucial role in suppressing interfacial charge recombination in dye-sensitized solar cells (DSCs), enabling a high open-circuit photovoltage (V oc). Here, two organic photosensitizers, H6 and H7, featuring the bulky donor N-(2(y),4(y)-bis(hexyloxy)-[1,1(y)-biphenyl]-4-yl)-2(y),4(y)-bis(hexyloxy)-N-methyl-[1,1(y)-biphenyl]-4-amine and N-(2(y),4(y)-bis(dodecyloxy)-[1,1(y)-biphenyl]-4-yl)-2(y),4(y)-bis(dodecyloxy)-N-methyl-[1,1(y)-biphenyl]-4-amine is reported, respectively, along with bis-hexylthiophene as the pi-linker and the electron acceptor 4-(benzo[c][1,2,5]thiadiazol-4-yl)benzoic acid. Although the significantly longer alkyl chains do not change the optical energy gap, for H7, it has been able to design molecular structures that exhibit longer excited-state lifetimes in both dye-grafted titania and alumina films compared to its H6 counterpart. The copper-based DSC using the longer alkyl chain-based photosensitizer H7 achieves a high V oc of 1.22 V, comparable to the recently explored hybrid methyl ammonium lead-based perovskite semiconductors (PSK) in solar cells. The co-sensitized device combined with XY1b results in an efficient DSC with an impressive fill factor of 82.1% and an excellent power conversion efficiency (PCE) of 13.7% under simulated AM1.5 G conditions at 100 mW cm-2. Furthermore, the best device achieves an outstanding efficiency of up to 29.7% under dim light overpassing compared to the PSK solar cells.

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Advanced Science 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, 2025, it was in position 33/460, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary. Notably, the journal is positioned above the 90th percentile.

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 2025-12-08:

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: 5.
  • The number of mentions on the social network X (formerly Twitter): 6 (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: http://hdl.handle.net/2072/484679

Leadership analysis of institutional authors

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

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Wu, Heng) and Last Author (Palomares Gil, Emilio).

the author responsible for correspondence tasks has been Palomares Gil, Emilio.

Awards linked to the item

This work was supported by the Spanish Government and AGAUR (Ministerio de Ciencia e Innovacion Severo Ochoa GrantMCIN/AEI/10.13039/501100011033 (CEX2019-000925-S), PID2022-139866NB-I00, and 2021 SGR 01261, respectively). Financial support from the European Union through the ERC Advanced grant ERC101097684- excited is appreciated. E.P. also acknowledges ICIQ, CERCA,and ICREA for financial support. H.W. acknowledges financial support from the Natural Science Foundation of Hainan Province (521QN239).H.W. thanks Javier Perez Hernandez for help with CE and TPV measurements. H.W. thanks Dr. Wenhui Li for providing the perovskite solarcellr No Statement Availabler No Statement Availabler No Statement Availabler No Statement Availabler No Statement Availabler No Statement Availabler No Statement Availabler No Statement Available