Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
CMP
Credit: Jack Hobhouse

Dr Alexandra Ramadan [she/her]

Postdoctoral Research Assistant

Research theme

  • Photovoltaics and nanoscience

Sub department

  • Condensed Matter Physics

Research groups

  • Photovoltaic and optoelectronic device group
alexandra.ramadan@physics.ox.ac.uk
  • About
  • Prizes, awards and recognition
  • Equality, Diversity, and Inclusion Work
  • Outreach and Engagement
  • Publications

Research Interests

My research focus is on emerging semiconductors, in particular metal halide perovskite semiconductors, predominantly for their use in photovoltaic (solar energy) applications but also in light emitting diode (LED) devices.

Photovoltaics based on metal halide perovskite semiconductors are of particular interest to the research community because they can be fabricated through easy solution processing methods which offer the opportunity for low-cost photovoltaics. An essential for providing renewable energy to the global population.

Metal halide perovskites are now rivalling silicon based photovoltaics in terms of efficiency, a particularly impressive feat given this development has taken < 15 years, and now the challenge is ensuring their long-term stability so they can be used for real world deployment.

My research is focussed on understamding the link between the chemistry of these materials and how this determines their stability. In particular I am interested in structural defects in these materials and determining how they influence their electronic properties. 

I am a postdoctoral researcher in the group of Professor Henry Snaith in the Department of Physics and I am currently working on the EU project "peroCUBE".

Research interests

Perovskite Solar Cells
Organic Semiconductors
Electronic Structure
Structural Defects

Selected publications

Thermally stable passivation toward high efficiency inverted perovskite solar cells

ACS Energy Letters American Chemical Society 5:11 (2020) 3336-3343
Robert DJ Oliver, Yen-Hung Lin, Alexander J Horn, Chelsea Q Xia, Jonathan H Warby, Michael B Johnston, Alexandra J Ramadan, Henry J Snaith

Revealing the stoichiometric tolerance of lead tri-halide perovskite thin-films

Chemistry of Materials American Chemical Society (ACS) (2019) acs.chemmater.9b02639
Alexandra J Ramadan, Maryline Ralaiarisoa, Fengshuo Zu, Luke A Rochford, Bernard WENGER, Norbert Koch, Henry SNAITH

A piperidinium salt stabilizes efficient metal-halide perovskite solar cells.

Science (New York, N.Y.) Nature Research 369:6499 (2020) 96-102
Yen-Hung Lin, Nobuya Sakai, Peimei Da, Jiaying Wu, Harry C Sansom, Alexandra J Ramadan, Suhas Mahesh, Junliang Liu, Robert DJ Oliver, Jongchul Lim, Lee Aspitarte, Kshama Sharma, Pk Madhu, Anna B Morales-Vilches, Pabitra K Nayak, Sai Bai, Feng Gao, Chris RM Grovenor, Michael B Johnston, John G Labram, James R Durrant, James M Ball, Bernard Wenger, Bernd Stannowski, Henry J Snaith

Revealing factors influencing the operational stability of perovskite light-emitting diodes

ACS Nano American Chemical Society 14:7 (2020) 8855-8865
Jonathan H Warby, Bernard Wenger, Alexandra J Ramadan, Robert Oliver, Harry Sansom, Ashley Marshall, Henry Snaith
See all publications

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet