WELCOME TO DIMITROV LAB
We use laser spectroscopy to develop new generation semiconducting materials and solar energy technologies. We love building new spectroscopy experiments and learning about photochemistry and photophysics.
UPDATES FROM THE LAB
"Xuan organised an engaging activity at the Festival of Communities 2023, making solar cells in Stepney Green Park. Levon was there actively helping. "
"Levon won the best poster prize at RSC's Next Generation Materials for Solar Photovoltaics 2024 meeting. "
"Stoichko and Xuan had a successful showcase of our in-situ analysis method for printing perovskite PV at QMUL's Night of Science and Engineering 2023. "
"Yifan presented his work on 2D substrates for all-inorganic perovskite PV at the January 2024 QMUL PV Symposium "
RESEARCH
We are an experimental Photochemistry and Photophysics group, which utilises a range of spectroscopic tools to develop novel functional semiconductors, with the main focus on solar energy harvesting technologies. Our interest is in understanding the response of materials to light absorption on the femtosecond to millisecond timescales and the implications for material performance in devices like photovoltaics.
We also work on the scale-up of printed photovoltaics. Specifically, we have developed a new in-situ characterisation kit to analyse the printing process of perovskite or organic photovoltaics providing us with unique insights into the material formation kinetics.
Time-resolved laser spectroscopy techniques like transient absorption and photoluminescence spectroscopy are the main tools we use in combination with material and device fabrication to discover new opportunities for material performance enhancement.
Our projects explore organic, hybrid perovskite and quantum dot semiconductors. We collaborate with synthetic chemists, materials scientists and engineers from QMUL, The University of Cambridge, UCL, Imperial College London and Swansea University.
Our in-situ analysis for printing PV
We have build a unique optical spectroscopy set-up for analysis of printing and post treatment to speed up process optimisation without the need for full scale device fabrication
Printing perovskite devices
Currently our focus is on developing industrially scalable printing methodology for organic-inorganic perovskite photovoltaics based on slot-die coating.
In-situ analysis of printed films
Our portable in-situ characterisation set-up probes film drying and crystal growth during or after printing.
Case studies
Using our in-situ analysis approach we have printed 25x75 mm high quality MAPI perovskite films with operate at up to 16% power conversion efficiency.
MEET THE DIMITROV LAB
CHRISTIAN OSBORNE
PhD student
Christian's PhD project is on excited state diffusion in organic semiconductors
Dr Yifan Liu
Visitin Researcher
Yifan works on printing all inorganic perovskite solar cells
LEVON ABELIAN
PhD student
Levon's PhD project is on UV down conversion for PV devices
Chun Hei Lao
PhD student
Chun Hei works on Scale up of electrode interlayers for fully printed perovskite solar cells
PUBLICATIONS
COME WORK OR STUDY WITH US
Postdoc/Researcher; we are always looking for candidates interested to join our group. Please, get in touch to discuss opportunities by sending your CV and cover letter to s.dimitrov@qmul.ac.uk.
Interested in PhD studies, we support outstanding students for various international PhD scholarship routes. Examples include China Scholarship Council (CSC); Commonwealth Scholarships; CONACYT (Mexico). Visit this page for details.
Interested in MSc studies, you can join the group for a year-long project via QMUL Chemistry MSc programme. Visit this page for details.
CONTACT DETAILS
Dr Stoichko Dimitrov
Lecturer in Chemistry
Department of Chemistry
Queen Mary University of London
Joseph Priestley Building, Mile End Road, London E1 4NS
email: s.dimitrov@qmul.ac.uk
T: +44 (0)20 7882 8884