Dr. James Robert Jennings

Dr Jennings obtained his PhD from the University of Bath (UK) in 2009, working on the characterisation and modelling of excitonic solar cells. 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. In mid-2014 he was appointed as Lecturer in Applied Physics at Universiti Brunei Darussalam where he currently holds the position of Senior Assistant Professor. His research to date has included characterization and modelling of excitonic solar cells, redox flow Li-ion batteries, and electrochromic devices.

EDUCATION

2009 PhD University of Bath, UK
2005 BSc (Hons) University of Bath, UK

RESEARCH INTERESTS

Photoelectrochemistry
Solar energy conversion and storage
Batteries
Electrochromics
Simulation and modeling

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, reliable determination of electron diffusion length in nanostructured electrodes, measurement and simulation of inefficient dye regeneration in dye-sensitized solar cells under operating conditions.