ACS Energy Letters Makes Its First Impact wo years ago, we launched ACS Energy Letters to publish breakthrough advances in energy research with rapid speed. Our streamlined editorial process has allowed our authors to publish papers with an average
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publication time (submission to paginated publication on the web) of about 31 days. Last year we also introduced an Energy Express feature to publish short, 2-page communications. In addition to research articles, the editorial content of Viewpoints and Energy Focus articles remains a popular feature as it encourages community-wide discussions. Our early success in establishing a journal with an energy focus is evidenced by the recently released journal impact factor (JIF) of 12.277 (released by the Clarivate Analytics). The first volume with 173 published research articles in 2016 and 2124 citations in 2017 represents the initial impact of ACS Energy Letters within a short period. This partial JIF is based on a single year, and we expect it to significantly increase next year. In fact, the 2017 Immediacy Index (ratio of citations/articles in the same year) of 3.226 shows the rising impact of ACS Energy Letters. The journal ranks no. 1 in the Electrochemistry category and Quartile 1 (Q1) in the rest of the categories. Because the JIF alone does not tell the complete story of the impact of published papers, we tracked the citations of published papers using the open data available from Web of Science (Core Collection), Clarivate Analytics. Figure 1 shows the breakdown of citations of the 2016 papers. Around 40% of the 2016 papers were cited more than the journal impact factor, while about 30% were cited less than 5 times in 2017. The median impact factor of the journal was 8, which is only slightly below the JIF. This distribution of citations/paper
Figure 1. Distribution of 2016 papers based on 2017 citations. Source: Web of Science Core Collection, Clarivate Analytics (May 25, 2018).
Table 1. Top 10 Cited Papers from 2016a publication
citation
times citedb
times citedc
(1)
Zhumekenov, A. A.; Saidaminov, M. I.; Haque, M. A.; Alarousu, E.; Sarmah, S. P.; Murali, B.; Dursun, I.; Miao, X. H.; Abdelhady, A. L.; Wu, T., et al. Formamidinium Lead Halide Perovskite Crystals with Unprecedented Long Carrier Dynamics and Diffusion Length.
ACS Energy Letters 2016, 1, 32−37.
87
121
(2)
Giustino, F.; Snaith, H. J. Toward Lead-Free Perovskite Solar Cells.
ACS Energy Letters 2016, 1, 1233−1240.
56
100
(3)
Werner, J.; Barraud, L.; Walter, A.; Brauninger, M.; Sahli, F.; Sacchetto, D.; Tetreault, N.; Paviet-Salomon, B.; Moon, S. J.; Allebe, C., et al. Efficient Near-Infrared-Transparent Perovskite Solar Cells Enabling Direct Comparison of 4-Terminal and Monolithic Perovskite/Silicon Tandem Cells.
ACS Energy Letters 2016, 1, 474−480.
59
83
(4)
Seh, Z. W.; Fredrickson, K. D.; Anasori, B.; Kibsgaard, J.; Strickler, A. L.; Lukatskaya, M. R.; Gogotsi, Y.; Jaramillo, T. F.; Vojvodic, A. Two-Dimensional Molybdenum Carbide (MXene) as an Efficient Electrocatalyst for Hydrogen Evolution.
ACS Energy Letters 2016, 1, 589−594.
42
74
(5)
Slotcavage, D. J.; Karunadasa, H. I.; McGehee, M. D. Light-Induced Phase Segregation in Halide-Perovskite Absorbers.
ACS Energy Letters 2016, 1, 1199−1205.
39
62
(6)
Yoon, S. J.; Draguta, S.; Manser, J. S.; Sharia, O.; Schneider, W. F.; Kuno, M.; Kamat, P. V. Tracking Iodide and Bromide Ion Segregation in Mixed Halide Lead Perovskites during Photoirradiation.
ACS Energy Letters 2016, 1, 290−296.
42
60
(7)
Saidaminov, M. I.; Almutlaq, J.; Sarmah, S.; Dursun, I.; Zhumekenov, A. A.; Begum, R.; Pan, J.; Cho, N.; Mohammed, O. F.; Bakr, O. M. Pure Cs4PbBr6: Highly Luminescent Zero Dimensional Perovskite Solids.
ACS Energy Letters 2016, 1, 840−845.
36
60
(8)
Savory, C. N.; Walsh, A.; Scanlon, D. O. Can Pb-Free Halide Double Perovskites Support High-Efficiency Solar Cells?
ACS Energy Letters 2016, 1, 949−955.
27
56
(9)
Ravi, V. K.; Markad, G. B.; Nag, A. Band Edge Energies and Excitonic Transition Probabilities of Colloidal CsPbX3 (X = Cl, Br, I) Perovskite Nanocrystals.
ACS Energy Letters 2016, 1, 665−671.
33
55
Published: July 13, 2018 © 2018 American Chemical Society
1779
DOI: 10.1021/acsenergylett.8b01088 ACS Energy Lett. 2018, 3, 1779−1780
Editorial
Cite This: ACS Energy Lett. 2018, 3, 1779−1780
ACS Energy Letters
Editorial
Table 1. continued publication (10)
citation
deQuilettes, D. W.; Koch, S.; Burke, S.; Paranji, R. K.; Shropshire, A. J.; Ziffer, M. E.; Ginger, D. S. Photoluminescence Lifetimes Exceeding 8 μs and Quantum Yields Exceeding 30% in Hybrid Perovskite Thin Films by Ligand Passivation.
times citedb
times citedc
30
54
ACS Energy Letters 2016, 1, 438−444.
a
Source: Web of Science Core Collection, Clarivate Analytics (June 27, 2018). b2016−2017. cTo date (June 27, 2018).
shows that not all papers carry an impact similar to that of the JIF, but collectively they determine the impact of the journal. The 10 most cited articles are presented in Table 1. The research article by Bakr and co-workers leads the pack with more than 100 citations. Figure 2 shows the impact of key
Figure 2. Impact of key topics as represented by citations per article in each category. Source: Web of Science Core Collection, Clarivate Analytics (June 27, 2018).
topics as estimated from citations per paper. The research related to metal halide perovskites appears to be the most popular topic in 2017. It is followed by HER/OER/H2O splitting. Whereas the JIF of 12.277 represents a composite impact of all the papers published in 2016, the impact of individual papers varies depending upon the subject category as well as the nature of research presented in the paper. The authors and readers should keep in mind these facts when comparing the impact of their paper with that of the journal impact factor. Our initial success is entirely due to the overwhelming support received from the authors, reviewers, and readers. On behalf of our entire editorial team, I would like to thank our authors for publishing their best work, the reviewers for submitting their critical reviews in a timely fashion, and our readers for embracing the contents of the journal with great enthusiasm. Our editorial and production teams are excited to work with you in publishing new and significant advances made in your laboratory with speed. We look forward to more successful interactions in the future.
Prashant V. Kamat, Editor-in-Chief
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University of Notre Dame, Notre Dame, Indiana 46556, United States
AUTHOR INFORMATION
ORCID
Prashant V. Kamat: 0000-0002-2465-6819 Notes
Views expressed in this editorial are those of the author and not necessarily the views of the ACS.
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ACKNOWLEDGMENTS I thank Constance Biegel for the data analysis and plots included in this editorial. 1780
DOI: 10.1021/acsenergylett.8b01088 ACS Energy Lett. 2018, 3, 1779−1780
