The research interest of Dr. Jain, targets on next generation photovoltaic materials, mainly perovskite solar cells (PSCs) and Organic solar cells.

Although, perovskite solar cells achieved 22 % record high efficiency for small modules, the toxicity of lead present in them and the stability of the solar cells still remains a hurdle for their commercialization.

Align in this direction, Sagar´s work is focused on several domains of research involving PSCs as:  

Synthesis and characterization of new absorber materials, new interfaces as well single crystals for solar cells, designing new solar cell architectures – investigate structural, optical, and electronic properties by combining different experimental and characterization techniques.

Characterization techniques:

  • X-ray diffraction; Atomic force microscopy (AFM); Scanning electron microscopy (SEM); Transmission electron microscopy (TEM) and Kelvin probe
  • Spectroscopies: NEXAFS – Near edge X-Ray Absorption fine structure; HR-XPS – High resolution X-ray photoelectron; UV-Visible, Raman, Photoluminiscence etc
  • Interface engineering of Solar cells : development of 2D materials for high efficiency, low cost and stable hybrid solar cells and modules, utilizing graphene, carbon nanotubes, self-assembled monolayers (SAMs) and other 2D materials.

One of the aspect of the research is investigating the new lead-free perovskite materials to be used in solar cells as well investigation of stability of perovskite and organic photovoltaic solar cells.

In addition, Sagar is also finding alternative low cost and low temperature processed hole transport and electron transport materials for perovskite solar cells and development of new deposition techniques and methodology for preparation of perovskite solar cells.

Areas of Expertise

  • Surface Science
  • Perovskite Solar cells
  • Carbon nanotubes, Graphene and Hybrid carbon composites
  • Proton Exchange Membranes for Fuel cells
  • Hydrogen Storage
  • Light emitting diodes (LEDs)
  • High resolution photoelectron spectroscopy (HR-XPS) and Near edge X-ray absorption fine structure Spectroscopy (NEXAFS)
  • Catalysis


  1. & Dopant-Free, Novel Hole Transporting Materials Based on Quinacridone Dye for High-Performance and Humidity Stable Mesoporous Perovskite Solar Cells. Journal of Materials Chemistry A
  2. & Solvent engineering approach via introducing poly (3, 4-ethylene dioxy-thiophene)–poly (styrene sulfonate) (PEDOT:PSS) into photosensitive absorber layer for ambient temperature processed efficient inverted planar perovskite solar cells. Solar Energy 176, 1-9.
  3. & Jet nebulizer-spray coated CZTS film as Pt-free electrocatalyst in photoelectrocatalytic fuel cells. Applied Surface Science 463, 994-1000.
  4. (0). Perovskite Solar Cells – Progress and Challenges. Presented at Perovskite Solar Cells – Progress and Challenges, India: Joint India-UK International Conference on Advanced Nanomaterials for Energy, Environment and Healthcare Applications (ANEH-2018).
  5. & Improvement in the performance of inverted planar perovskite solar cells via the CH3NH3PbI3-xClx:ZnO bulk heterojunction. Journal of Power Sources 401, 303-311.

See more...


  • Comparing differences in work function between MAPI and MABI across a range of experiments. (current)

    Student name:
    Other supervisor: Dr Matthew Davies

Public Engagements

Swansea science festival 9 - 10th September 2017: Sagar, lead the project and the team of 9 researchers showcasing/teaching and spreading the general awareness of solar cell uses to common audience:  “How to make working dye solar cells from smashed blueberries, raspberries and beetroot juice”. More than 120 working solar cells made by audience.

Public Engagement 1 Public Engagement 2

Public Engagement 3 Public Engagement 4

Public Engagement 5

Collaborative Partners

Partner Name Description
Imperial College London, UK TBA
Queensland University of Technology (QUT), Australia TBA
Uppsala University, Sweden TBA
Lund University, Sweden TBA
Sheffield University, UK TBA
Max Planck Institute of Intelligent Systems, Stuttgart, Germany TBA
National Chemical Laboratory & Indian Institute of Science, Education and Research TBA
Soochow University, China TBA

Academic History

Date Qualification Location
2004 MSc Physical Chemistry Pune University, India
2011 PhD Materials & Nanostructures University of Torino, Italy

Career History

Start Date End Date Position Held Location
2011 2012 Post-Doctoral Researcher University of Torino, and University of Eastern Piedmont Amedeo Avogadro, Italy
2012 2014 Post-Doctoral Researcher University of Heidelberg, Germany
2014 2016 Post-Doctoral Fellow Uppsala University, Sweden
2016 Present ER Marie Curie COFUND Fellow Swansea University, UK

Invited Presentations, Lectures and Conferences

Date Description
January 2018 “Vapour assisted morphological tailoring of lead-free Bismuth based perovskite solar cells for improved performance & stability"
June 2017 “Interface engineering of perovskite solar cells for improved performance”
September 2011 6th International Congress on the Application of Raman Spectroscopy
May 2009 ABC-6 6TH World Congress on Catalysis by Acids and Bases

Awards And Prizes

Date Description
2016 ER Marie-Curie COFUND fellowship for Experienced Researcher (Horizon 2020)
2014 Wallenberg foundation scholarship for research and innovation in the field of perovskite solar cells
2012 Baden-Württemberg fellowship for fundamental and practical application of SAMs in electronics
2008 MIUR (Ministry of University Education and Research) Scholarship

External Responsibilities

  • Review Editor, Frontiers in Chemistry (IF = 3.99)

    2015 - Present

  • Member, Member of Royal Society of Chemistry

    2015 - Present


Year – September, 2017

Title - “Dopant Free and Low-Cost Hole Transporting Materials for High Performance Stable Perovskite Solar Cells”

Partners Involved –

Queensland University of Technology (QUT), Brisbane, Australia – Prof. Prashant Sonar, Mr. Hong Duc Pham and

Swansea University, Swansea, U.K. - Dr. Sagar M. Jain

Teaching Experience

Dec. 2004 - Aug. 2005: Lecturer and Research Executive for Chemistry

CAREER FORUM, Pvt Educational Institute affiliated to University of Pune, India.

2016-2017: Swansea university, UK

Conducting lectures and Practical’s on Ultrasound Experiments for Master and Undergraduate students.