Timothy J. H. Hele

2.2k total citations · 1 hit paper
22 papers, 1.7k citations indexed

About

Timothy J. H. Hele is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, Timothy J. H. Hele has authored 22 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Atomic and Molecular Physics, and Optics, 12 papers in Electrical and Electronic Engineering and 5 papers in Materials Chemistry. Recurrent topics in Timothy J. H. Hele's work include Spectroscopy and Quantum Chemical Studies (10 papers), Organic Electronics and Photovoltaics (10 papers) and Organic Light-Emitting Diodes Research (9 papers). Timothy J. H. Hele is often cited by papers focused on Spectroscopy and Quantum Chemical Studies (10 papers), Organic Electronics and Photovoltaics (10 papers) and Organic Light-Emitting Diodes Research (9 papers). Timothy J. H. Hele collaborates with scholars based in United Kingdom, United States and China. Timothy J. H. Hele's co-authors include Emrys W. Evans, Richard H. Friend, Feng Li, Alexander J. Gillett, Haoqing Guo, Yingxin Chen, Xin Ai, Shengzhi Dong, Nandini Ananth and Qinying Gu and has published in prestigious journals such as Nature, Journal of the American Chemical Society and Nature Communications.

In The Last Decade

Timothy J. H. Hele

22 papers receiving 1.7k 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.

Efficient radical-based light-emitting diodes with doublet emission

2018 625 citations Xin Ai, Emrys W. Evans et al. Nature profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Timothy J. H. Hele United Kingdom	16	1.1k	893	412	363	243	22	1.7k
Jonathan Z. Low United States	18	1.2k 1.2×	671 0.8×	575 1.4×	287 0.8×	286 1.2×	21	1.7k
Shane R. Yost United States	8	1.2k 1.1×	763 0.9×	678 1.6×	246 0.7×	342 1.4×	9	1.9k
Eric Hontz United States	13	1.6k 1.5×	1.0k 1.2×	549 1.3×	196 0.5×	343 1.4×	16	2.4k
Shuming Bai China	21	567 0.5×	788 0.9×	602 1.5×	234 0.6×	308 1.3×	67	1.7k
Irina Paci Canada	17	510 0.5×	501 0.6×	374 0.9×	248 0.7×	248 1.0×	51	1.4k
Johannes Zirzlmeier Germany	16	714 0.7×	666 0.7×	473 1.1×	257 0.7×	343 1.4×	20	1.3k
Joonghan Kim South Korea	21	381 0.4×	687 0.8×	428 1.0×	225 0.6×	233 1.0×	90	1.4k
Piotr de Silva Denmark	19	826 0.8×	771 0.9×	325 0.8×	269 0.7×	312 1.3×	63	1.5k
Alessio Petrone Italy	24	648 0.6×	723 0.8×	682 1.7×	132 0.4×	341 1.4×	55	1.7k
Sam L. Bayliss United Kingdom	19	940 0.9×	757 0.8×	667 1.6×	106 0.3×	177 0.7×	27	1.6k

Countries citing papers authored by Timothy J. H. Hele

Since Specialization

Citations

This map shows the geographic impact of Timothy J. H. Hele'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 Timothy J. H. Hele with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy J. H. Hele more than expected).

Fields of papers citing papers by Timothy J. H. Hele

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Timothy J. H. Hele. 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 Timothy J. H. Hele. The network helps show where Timothy J. H. Hele may publish in the future.

Co-authorship network of co-authors of Timothy J. H. Hele

This figure shows the co-authorship network connecting the top 25 collaborators of Timothy J. H. Hele. A scholar is included among the top collaborators of Timothy J. H. Hele 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 Timothy J. H. Hele. Timothy J. H. Hele is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Shen, Jie, Kun Ma, James Green, et al.. (2025). Learning radical excited states from sparse data. Chemical Science. 16(37). 17356–17368. 3 indexed citations

Hele, Timothy J. H., et al.. (2024). ExROPPP: Fast, accurate, and spin-pure calculation of the electronically excited states of organic hydrocarbon radicals. The Journal of Chemical Physics. 160(16). 6 indexed citations

Runeson, Johan E., et al.. (2023). Which Algorithm Best Propagates the Meyer–Miller–Stock–Thoss Mapping Hamiltonian for Non-Adiabatic Dynamics?. Journal of Chemical Theory and Computation. 19(18). 6109–6125. 5 indexed citations

Li, Feng, Alexander J. Gillett, Qinying Gu, et al.. (2022). Singlet and triplet to doublet energy transfer: improving organic light-emitting diodes with radicals. Nature Communications. 13(1). 2744–2744. 73 indexed citations

Fuemmeler, Eric G., et al.. (2022). Inverse molecular design from first principles: Tailoring organic chromophore spectra for optoelectronic applications. The Journal of Chemical Physics. 156(18). 180901–180901. 17 indexed citations

Hele, Timothy J. H., et al.. (2021). Efficient light-emitting diodes from organic radicals with doublet emission. Journal of Applied Physics. 129(18). 71 indexed citations

Congrave, Daniel G., Alex Förster, Alessandro Minotto, et al.. (2021). Intrinsic photogeneration of long-lived charges in a donor-orthogonal acceptor conjugated polymer. Chemical Science. 12(23). 8165–8177. 9 indexed citations

Hele, Timothy J. H., Bartomeu Monserrat, & Antonios M. Alvertis. (2021). Systematic improvement of molecular excited state calculations by inclusion of nuclear quantum motion: A mode-resolved picture and the effect of molecular size.. Apollo (University of Cambridge). 11 indexed citations

Abdurahman, Alim, Timothy J. H. Hele, Qinying Gu, et al.. (2020). Understanding the luminescent nature of organic radicals for efficient doublet emitters and pure-red light-emitting diodes. Nature Materials. 19(11). 1224–1229. 248 indexed citations

10.

Feng, Jiale, Alexander S. Romanov, Antti‐Pekka M. Reponen, et al.. (2020). Environmental Control of Triplet Emission in Donor–Bridge–Acceptor Organometallics. Advanced Functional Materials. 30(9). 38 indexed citations

11.

Alvertis, Antonios M., Steven Lukman, Timothy J. H. Hele, et al.. (2019). Switching between Coherent and Incoherent Singlet Fission via Solvent-Induced Symmetry Breaking. Journal of the American Chemical Society. 141(44). 17558–17570. 103 indexed citations

12.

Hele, Timothy J. H., Eric G. Fuemmeler, Samuel N. Sanders, et al.. (2019). Anticipating Acene-Based Chromophore Spectra with Molecular Orbital Arguments. The Journal of Physical Chemistry A. 123(13). 2527–2536. 32 indexed citations

13.

Ai, Xin, Emrys W. Evans, Shengzhi Dong, et al.. (2018). Efficient radical-based light-emitting diodes with doublet emission. Nature. 563(7732). 536–540. 625 indexed citations breakdown →

14.

Evans, Emrys W., Yoann Olivier, Yuttapoom Puttisong, et al.. (2018). Vibrationally Assisted Intersystem Crossing in Benchmark Thermally Activated Delayed Fluorescence Molecules. The Journal of Physical Chemistry Letters. 9(14). 4053–4058. 78 indexed citations

15.

Hele, Timothy J. H., et al.. (2018). Nonadiabatic semiclassical dynamics in the mixed quantum-classical initial value representation.. Apollo (University of Cambridge). 12 indexed citations

16.

Kumarasamy, Elango, Samuel N. Sanders, Murad J. Y. Tayebjee, et al.. (2017). Tuning Singlet Fission in π-Bridge-π Chromophores. Journal of the American Chemical Society. 139(36). 12488–12494. 149 indexed citations

17.

Hele, Timothy J. H.. (2017). Thermal quantum time-correlation functions from classical-like dynamics. Molecular Physics. 115(13). 1435–1462. 17 indexed citations

18.

Hele, Timothy J. H., et al.. (2017). A mapping variable ring polymer molecular dynamics study of condensed phase proton-coupled electron transfer. The Journal of Chemical Physics. 147(23). 234103–234103. 25 indexed citations

19.

Hele, Timothy J. H., et al.. (2016). Competing quantum effects in the free energy profiles and diffusion rates of hydrogen and deuterium molecules through clathrate hydrates. Physical Chemistry Chemical Physics. 18(47). 32169–32177. 32 indexed citations

20.

Hele, Timothy J. H., et al.. (2015). Boltzmann-conserving classical dynamics in quantum time-correlation functions: “Matsubara dynamics”. The Journal of Chemical Physics. 142(13). 134103–134103. 85 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.

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