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Dr. James Robert Jennings Assistant Professor, Faculty of Science

About Me Publications

Dr. James Robert Jennings

Assistant Professor, Faculty of Science james.jennings@ubd.edu.bn


ABOUT ME

Dr Jennings obtained his PhD in Physical Chemistry from the University of Bath, United Kingdom in 2009. From 2009 to 2014 he worked as Research Fellow and then Senior Research Fellow in the Department of Materials Science and Engineering at the National University of Singapore. His research to date has included characterization and modelling of mesoscopic solar cells, redox flow Li-ion batteries, and electrochromic devices. In mid-2014 he was appointed as Lecturer in Applied Physics at Universiti Brunei Darussalam. Dr Jennings obtained his PhD in Physical Chemistry from the University of Bath, United Kingdom in 2009. From 2009 to 2014 he worked as Research Fellow and then Senior Research Fellow in the Department of Materials Science and Engineering at the National University of Singapore. His research to date has included characterization and modelling of mesoscopic solar cells, redox flow Li-ion batteries, and electrochromic devices. In mid-2014 he was appointed as Lecturer in Applied Physics at Universiti Brunei Darussalam

RESEARCH INTERESTS

Photoelectrochemistry
Solar energy conversion and storage
Batteries
Electrochromics
Simulation and modeling

37

Scopus Publications

2168

Google Scholar Citations

21

Google Scholar h-index

24

Google Scholar i10-index


RECENT PUBLICATIONS

Jennings, J. R.; Huang, Q.; Wang, Q., Kinetics of LixFePO4 Lithiation/Delithiation by Ferrocene-Based Redox Mediators: An Electrochemical Approach, Journal of Physical Chemistry C 2015, 119, 17522.
Jennings, J. R.; Lim, W. Y.; Zakeeruddin, S. M.; Grätzel, M.; Wang, Q., A Redox-Flow Electrochromic Window, ACS Applied Materials & Interfaces 2015, 7, 2827.
Li, F.; Jennings, J. R.; Wang, X.; Fan, L.; Koh, Z. Y.; Yu, H.; Yan, L.; Wang, Q., Influence of Ionic Liquid on Recombination and Regeneration Kinetics in Dye-Sensitized Solar Cells, Journal of Physical Chemistry C 2014, 118, 17153.
Liu W. C.; Liu, Y.; Jennings, J. R.; Huang H.; Wang Q., Low-Cost and Flexible Poly (3,4-ethylenedioxythiophene) based Counter Electrodes for Efficient Energy Conversion in Dye-Sensitized Solar Cells, Journal of Materials Chemistry A 2014, 2, 10938.
Liu, Y.; Jennings, J. R.; Zakeeruddin, S. M.; Grätzel, M.; Wang, Q., Heterogeneous Electron Transfer from Dye-Sensitized Nanocrystalline TiO2 to [Co(bpy)3]3+: Insights Gained from Impedance Spectroscopy, Journal of the American Chemical Society 2013, 135, 10, 3939.


TOP PUBLICATIONS

Jennings, J. R.; Wang, Q., Influence of Lithium Ion Concentration on Electron Injection, Transport, and Recombination in Dye-Sensitized Solar Cells, Journal of Physical Chemistry C 2010, 114, 1715.
Jennings, J. R.; Li, F.; Wang, Q., Reliable Determination of Electron Diffusion Length and Charge Separation Efficiency in Dye-Sensitized Solar Cells, Journal of Physical Chemistry C 2010, 114, 14665.
Jennings, J. R.; Liu, Y.; Wang, Q., Efficiency Limitations in Dye-Sensitized Solar Cells Caused by Inefficient Sensitizer Regeneration, Journal of Physical Chemistry C 2011, 115, 15109.
Jennings, J. R.; Liu, Y.; Safari-Alamuti, F.; Wang, Q., Dependence of Dye-Sensitized Solar Cell Impedance on Photoelectrode Thickness, Journal of Physical Chemistry C 2012, 116, 1556.
Jennings, J. R.; Ghicov, A.; Peter, L. M.; Schmuki, P.; Walker, A. B., Dye-Sensitized Solar Cells based on Oriented TiO2 Nanotube Arrays: Transport, Trapping, and Transfer of Electrons, Journal of the American Chemical Society 2008, 130, 13364.


GRANT DETAILS

Grant type: URG, Grant Number: UBD/PNC2/2/RG/1(313), Project Title: Probing Charge Accumulation and Interfacial Electric Fields in Mesoscopic Solar Cells using Electro-Absorption Spectroscopy, Investigators (PI/Co-PI): Dr James Robert Jennings (PI) and Dr Yvonne Ying Woan Soon (co-PI), Start Date: 02/03/2015, End Date: 01/03/2017


Industry, Institute, or Organisation Collaboration

Collaboration with NUS, Singapore


SOCIAL, ECONOMIC, or ACADEMIC BENEFITS

Notable academic contributions to the field of semiconductor photoelectrochemistry: characterization and modelling of the effect of potential-determining ions on heterogeneous charge transfer mechanism at nanoparticle electrodes, development of reliable determination of electron diffusion length in nanostructured electrodes, measurement and simulation of inefficient dye regeneration in dye-sensitized solar cells under operating conditions.


Scopus Publications

Total Publications: 37



1. Redox Catalysis for Improved Counter-Electrode Kinetics in Dye-Sensitized Solar Cells, ChemElectroChem

2. Surface engineering of metal oxide photoelectrodes for improved band alignment in solar water splitting cells, Materials Science Forum

3. Synthesis of nanostructured β-Ni(OH)2 by electrochemical dissolution-precipitation and its application as a water oxidation catalyst, Nanotechnology

4. Kinetics of Li<inf>x</inf>FePO<inf>4</inf> Lithiation/Delithiation by Ferrocene-Based Redox Mediators: An Electrochemical Approach, Journal of Physical Chemistry C

5. A redox-flow electrochromic window, ACS Applied Materials and Interfaces

6. Influence of ionic liquid on recombination and regeneration kinetics in dye-sensitized solar cells, Journal of Physical Chemistry C

7. Low-cost and flexible poly(3,4-ethylenedioxythiophene) based counter electrodes for efficient energy conversion in dye-sensitized solar cells, Journal of Materials Chemistry A

8. Efficient dye-sensitized solar cells using a tetramethylthiourea redox mediator, ChemSusChem

9. Determination of sensitizer regeneration efficiency in dye-sensitized solar cells, ACS Nano

10. Determining the conductivities of the two charge transport phases in solid-state dye-sensitized solar cells by impedance spectroscopy, Journal of Physical Chemistry C

11. Significant performance improvement in dye-sensitized solar cells employing cobalt(iii/ii) tris-bipyridyl redox mediators by co-grafting alkyl phosphonic acids with a ruthenium sensitizer, Physical Chemistry Chemical Physics

12. Conformal growth of nanocrystalline CdX (X = S, Se) on mesoscopic NiO and their photoelectrochemical properties, Physical Chemistry Chemical Physics

13. Heterogeneous electron transfer from dye-sensitized nanocrystalline TiO2 to [Co(bpy)3]3+: Insights gained from impedance spectroscopy, Journal of the American Chemical Society

14. CdSe-sensitized mesoscopic TiO 2 solar cells exhibiting >5% efficiency: Redundancy of CdS buffer layer, Journal of Materials Chemistry

15. Impedance spectroscopy of dye-sensitized solar cells: Analysis of measurement and fitting errors, Journal of the Electrochemical Society

16. Band engineered ternary solid solution CdS xSe 1-x-sensitized mesoscopic TiO 2 solar cells, Physical Chemistry Chemical Physics

17. Dependence of dye-sensitized solar cell impedance on photoelectrode thickness, Journal of Physical Chemistry C

18. Patterned 3-dimensional metal grid electrodes as alternative electron collectors in dye-sensitized solar cells, Physical Chemistry Chemical Physics

19. An ultraviolet selective photodetector based on a nanocrystalline TiO 2 photoelectrochemical cell, Sensors and Actuators, A: Physical

20. Cobalt redox mediators for ruthenium-based dye-sensitized solar cells: A combined impedance spectroscopy and near-IR transmittance study, Journal of Physical Chemistry C

21. Efficiency limitations in dye-sensitized solar cells caused by inefficient sensitizer regeneration, Journal of Physical Chemistry C

22. Evolution of charge collection separation efficiencies in dye-sensitized solar cells upon aging: A case study, Journal of the Electrochemical Society

23. Carrier generation and collection in CdS/CdSe-sensitized SnO2 Solar cells exhibiting unprecedented photocurrent densities, ACS Nano

24. The influence of dye structure on charge recombination in dye-sensitized solar cells, Physical Chemistry Chemical Physics

25. An organic redox mediator for dye-sensitized solar cells with near unity quantum efficiency, Energy and Environmental Science

26. Dinuclear Ru-Cu complexes: Electronic characterisation and application to dye-sensitised solar cells, European Journal of Inorganic Chemistry

27. Charge transport and interfacial charge transfer in dye-sensitized nanoporous semiconductor electrode systems, Key Engineering Materials

28. Mesoporous SnO2 spheres synthesized by electrochemical anodization and their application in CdSe-sensitized solar cells, Journal of Physical Chemistry C

29. Reliable determination of electron diffusion length and charge separation efficiency in dye-sensitized solar cells, Journal of Physical Chemistry C

30. Influence of lithium ion concentration on electron injection, transport, and recombination in dye-sensitized solar cells, Journal of Physical Chemistry C

31. Synthesis and properties of [Pt(4-CO2CH3-py)2(dmit)] and [Pt(4-NO2-py)2(mnt)]: Exploring tunable Pt dyes, Polyhedron

32. Novel ruthenium bipyridyl dyes with S-donor ligands and their application in dye-sensitized solar cells, Journal of Photochemistry and Photobiology A: Chemistry

33. Synthesis and properties of [Pt(4-CO2CH3-py) 2(mnt)]: Comparison of pyridyl and bipyridyl-based dyes for solar cells, Dalton Transactions

34. Dithiolenes as functional ligands in solar cell dyes, ACS National Meeting Book of Abstracts

35. Dye-sensitized solar cells based on oriented TiO2 nanotube arrays: Transport, trapping, and transfer of electrons, Journal of the American Chemical Society

36. A reappraisal of the electron diffusion length in solid-state dye-sensitized solar cells, Journal of Physical Chemistry C

37. Solid-state dye-sensitized solar cells based on spiro-MeOTAD, Solar Energy Materials and Solar Cells