Alex J. Barker

5.6k total citations · 4 hit papers
39 papers, 3.7k citations indexed

About

Alex J. Barker is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Polymers and Plastics. According to data from OpenAlex, Alex J. Barker has authored 39 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Electrical and Electronic Engineering, 21 papers in Materials Chemistry and 8 papers in Polymers and Plastics. Recurrent topics in Alex J. Barker's work include Perovskite Materials and Applications (18 papers), Quantum Dots Synthesis And Properties (12 papers) and Chalcogenide Semiconductor Thin Films (11 papers). Alex J. Barker is often cited by papers focused on Perovskite Materials and Applications (18 papers), Quantum Dots Synthesis And Properties (12 papers) and Chalcogenide Semiconductor Thin Films (11 papers). Alex J. Barker collaborates with scholars based in Italy, New Zealand and United Kingdom. Alex J. Barker's co-authors include Annamaria Petrozza, James M. Ball, Filippo De Angelis, Silvia G. Motti, Ajay Ram Srimath Kandada, Edoardo Mosconi, Daniele Meggiolaro, Justin M. Hodgkiss, Marina Gandini and Carlo A. R. Perini and has published in prestigious journals such as Journal of the American Chemical Society, Advanced Materials and Nature Communications.

In The Last Decade

Alex J. Barker

38 papers receiving 3.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Iodine chemistry determines the defect tolerance of lead-halide perovskites

2018 534 citations Daniele Meggiolaro, Silvia G. Motti et al. Energy & Environmental Science profile →
Defect-Assisted Photoinduced Halide Segregation in Mixed-Halide Perovskite Thin Films

2017 533 citations Alex J. Barker, Marina Gandini et al. profile →
Carrier trapping and recombination: the role of defect physics in enhancing the open circuit voltage of metal halide perovskite solar cells

2016 459 citations Tomas Leijtens, Giles E. Eperon et al. Energy & Environmental Science profile →
Controlling competing photochemical reactions stabilizes perovskite solar cells

2019 347 citations Silvia G. Motti, Daniele Meggiolaro et al. Nature Photonics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Alex J. Barker Italy	21	3.4k	2.4k	1.1k	314	179	39	3.7k
Ravichandran Shivanna United Kingdom	20	2.9k 0.9×	2.0k 0.8×	922 0.8×	294 0.9×	154 0.9×	29	3.0k
Sudhir Kumar Switzerland	24	3.2k 0.9×	2.7k 1.1×	594 0.5×	333 1.1×	126 0.7×	55	3.5k
Takayuki Chiba Japan	32	4.8k 1.4×	3.2k 1.3×	1.3k 1.1×	260 0.8×	111 0.6×	104	5.2k
Samuele Lilliu United Kingdom	19	3.7k 1.1×	2.4k 1.0×	1.5k 1.4×	318 1.0×	168 0.9×	34	4.0k
Marius Franckevičius Lithuania	23	2.4k 0.7×	1.6k 0.6×	1.0k 0.9×	193 0.6×	189 1.1×	73	2.6k
Fabian Paulus Germany	29	2.8k 0.8×	1.8k 0.8×	1.1k 1.0×	175 0.6×	141 0.8×	59	3.1k
Sarah Wieghold United States	23	2.0k 0.6×	1.7k 0.7×	479 0.4×	276 0.9×	99 0.6×	65	2.3k
Lingqiang Meng China	21	2.5k 0.7×	1.8k 0.7×	655 0.6×	159 0.5×	189 1.1×	76	2.9k
Baiquan Liu China	38	3.1k 0.9×	2.4k 1.0×	699 0.6×	224 0.7×	158 0.9×	118	3.5k
Silvia G. Motti United Kingdom	19	3.2k 0.9×	2.6k 1.0×	711 0.6×	382 1.2×	156 0.9×	31	3.3k

Countries citing papers authored by Alex J. Barker

Since Specialization

Citations

This map shows the geographic impact of Alex J. Barker's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Alex J. Barker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Alex J. Barker more than expected).

Fields of papers citing papers by Alex J. Barker

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Alex J. Barker. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Alex J. Barker. The network helps show where Alex J. Barker may publish in the future.

Co-authorship network of co-authors of Alex J. Barker

This figure shows the co-authorship network connecting the top 25 collaborators of Alex J. Barker. A scholar is included among the top collaborators of Alex J. Barker based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Alex J. Barker. Alex J. Barker is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Park, Sung Ho, et al.. (2025). Abnormal vortex formation by 4D flow MRI as a marker for aortic valve replacement in moderate aortic stenosis: an exploratory study. Open Heart. 12(2). e003787–e003787.

Barsotti, Jonathan, Sara Perotto, Andrea Candini, et al.. (2023). Core–Shell Architecture in Poly(3-hexylthiophene) Nanoparticles: Tuning of the Photophysical Properties for Enhanced Neuronal Photostimulation. ACS Applied Materials & Interfaces. 15(10). 13472–13483. 6 indexed citations

Yang, Bo, Yanwei Gu, Giuseppe M. Paternò, et al.. (2023). Zigzag‐Edged Polycyclic Aromatic Hydrocarbons from Benzo[m]tetraphene Precursors. Chemistry - A European Journal. 29(22). e202203981–e202203981. 5 indexed citations

Mazzanti, Stefano, Giovanni Manfredi, Alex J. Barker, et al.. (2021). Carbon Nitride Thin Films as All-In-One Technology for Photocatalysis. ACS Catalysis. 11(17). 11109–11116. 71 indexed citations

Abbruzzetti, Stefania, Alex J. Barker, Carmen Pérez‐Rontomé, et al.. (2021). Unusually Fast bis-Histidyl Coordination in a Plant Hemoglobin. International Journal of Molecular Sciences. 22(5). 2740–2740. 1 indexed citations

Mróz, Wojciech, J. Serafińczuk, Alex J. Barker, et al.. (2020). New Synthetic Route of Ultrapure Alkylammonium Iodides for Perovskite Thin Films of Superior Optoelectronic Properties. Energy Technology. 8(10). 5 indexed citations

Liu, Jian, Bas van der Zee, Riccardo Alessandri, et al.. (2020). N-type organic thermoelectrics: demonstration of ZT > 0.3. Nature Communications. 11(1). 5694–5694. 141 indexed citations

Rubino, Andrea, Alex J. Barker, Annamaria Petrozza, et al.. (2020). Disentangling Electron–Phonon Coupling and Thermal Expansion Effects in the Band Gap Renormalization of Perovskite Nanocrystals. The Journal of Physical Chemistry Letters. 12(1). 569–575. 35 indexed citations

Motti, Silvia G., Daniele Meggiolaro, Samuele Martani, et al.. (2019). Defect Activity in Lead Halide Perovskites. Advanced Materials. 31(47). e1901183–e1901183. 246 indexed citations

10.

Motti, Silvia G., Daniele Meggiolaro, Alex J. Barker, et al.. (2019). Controlling competing photochemical reactions stabilizes perovskite solar cells. Zenodo (CERN European Organization for Nuclear Research). 2 indexed citations

11.

Chandrabose, Sreelakshmi, Kai Chen, Alex J. Barker, et al.. (2019). High Exciton Diffusion Coefficients in Fused Ring Electron Acceptor Films. Journal of the American Chemical Society. 141(17). 6922–6929. 231 indexed citations

12.

Pietralunga, Silvia Maria, Maurizio Zani, James M. Ball, et al.. (2019). Imaging photoinduced surface potentials on hybrid perovskites by real-time Scanning Electron Microscopy. Micron. 121. 53–65. 9 indexed citations

13.

Paternò, Giuseppe M., Nimai Mishra, Alex J. Barker, et al.. (2018). Broadband Defects Emission and Enhanced Ligand Raman Scattering in 0D Cs₃Bi₂I₉ Colloidal Nanocrystals. Advanced Functional Materials. 29(21). 52 indexed citations

14.

Paternò, Giuseppe M., Luca Moretti, Alex J. Barker, et al.. (2017). Near-infrared emitting single squaraine dye aggregates with large Stokes shifts. Journal of Materials Chemistry C. 5(31). 7732–7738. 33 indexed citations

15.

Paternò, Giuseppe M., Luca Moretti, Alex J. Barker, et al.. (2017). Correction: Near-infrared emitting single squaraine dye aggregates with large Stokes shifts. Journal of Materials Chemistry C. 5(42). 11144–11144. 1 indexed citations

16.

Leijtens, Tomas, Giles E. Eperon, Alex J. Barker, et al.. (2016). Carrier trapping and recombination: the role of defect physics in enhancing the open circuit voltage of metal halide perovskite solar cells. Energy & Environmental Science. 9(11). 3472–3481. 459 indexed citations breakdown →

17.

Grancini, Giulia, Ajay Ram Srimath Kandada, Jarvist M. Frost, et al.. (2015). Role of microstructure in the electron–hole interaction of hybrid lead halide perovskites. Nature Photonics. 9(10). 695–701. 225 indexed citations

18.

Chen, Kai, Joseph K. Gallaher, Alex J. Barker, & Justin M. Hodgkiss. (2014). Transient Grating Photoluminescence Spectroscopy: An Ultrafast Method of Gating Broadband Spectra. The Journal of Physical Chemistry Letters. 5(10). 1732–1737. 53 indexed citations

19.

Chen, Kai, Alex J. Barker, Matthew E. Reish, Keith C. Gordon, & Justin M. Hodgkiss. (2013). Broadband Ultrafast Photoluminescence Spectroscopy Resolves Charge Photogeneration via Delocalized Hot Excitons in Polymer:Fullerene Photovoltaic Blends. Journal of the American Chemical Society. 135(49). 18502–18512. 90 indexed citations

20.

Gai, S. L., et al.. (2004). Vortex interaction and breakdown over double-delta wings. The Aeronautical Journal. 108(1079). 27–34. 12 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact