1. 1. Solvothermal synthesis of WS2 rectangular nanoplates and their application in photothermal therapy, M. V. Santhosh, R. Geethu,  K. S. Devaky, Journal of Materials Science: Materials in Electronics, 34 (2023) 385.
   2. Optimistic exploitation of Poly(3-hexyl thiophene-benzothiadiazole) D-A copolymer for low Voc loss bulk heterojunction solar cells, Geethu R, Sona Narayanan , Santhosh M.V, K. P. Vijayakumar, K.S. Devaky , K. Sreekumar, Optical Materials 129 (2022) 112481
   3. A novel, facile and efficient two step hydrothermal route for WS2 nanosheets and its optimistic exposure as competent industrial level sonocatalyst, Santhosh M V; R. Geethu; Devaky K S, J Mater Sci: Mater Electron (2021) 32:9357–9367
   4. Overcoming consistency constrains of ITO/ZnO/P3HT:PCBM/Ag solar cell by open air annealing and its systematic stability study under inborn conditions, R. Geethu, Santhosh, C. Sudha Kartha, K. P. Vijayakumar, Journal of Materials Science: Materials in Electronics, 30 (2019) 18981–18989.
   5. Eco-friendly and non-toxic thin film solar cell employing spray pyrolysed p-CZTS and n-SnS: Cu—a novel approach, Gisa Grace Ninan, M. R. Rajesh Menon, R. Geethu, D. R. Deepu, C. Sudha Kartha, K. P. Vijayakumar, Journal of Materials Science: Materials in Electronics, 29 (23) (2018) 20455-20461.
   6. Improving the performance of ITO/ZnO/P3HT:PCBM/Ag solar cells by tuning the surface roughness of sprayed ZnO, R. Geethu, C. Sudha Kartha, K.P. Vijayakumar Solar Energy, 120 (2015) 65–71.
   7. Control of interconnected ZnO nanowires to vertically aligned ZnO nanorod arrays by tailoring the underlying spray deposited ZnO seed layer, K. S. Ranjith, R. Geethu, K. P. Vijayakumar, R. T. Rajendrakumar Materials Research Bulletin, 60 (2014) 584–588.
   8. Spray pyrolysed microporous TiO2 thin films by optimization of substrate temperature for all sprayed solar cells, M. V. Santhosh, D. R. Deepu, R. Geethu, C. Sudha Kartha, K. P. Vijayakumar. Semiconductor Science and Technology, 29 (11) (2014) 115026.
   9. Optoelectronic and Thermoelectric properties in Ga Doped β-PbS2 nanostructured thin films., R. Geethu, Rajani Jacob, T. Shripathi, G. S. Okram, V. Ganesan, Shilpa Tripathi, Anees Fatima, Sreenivasan P.V, Urmila K.S, B. Pradeep, Rachel Reena Philip, Applied Surface Science, 258 (17) (2012) 6257–6260.
   10. Structural, optical, electrical and low temperature thermoelectric studies on the ordered vacancy compound AgGa3Se5, Rajani Jacob, R. Geethu, T. Shripathi, G. S. Okram, V. Ganesan, B. Pradeep, K. S. Urmila and Rachel Reena Philip, physica status solidi (b), 249(6) (2012) 1271-1276.
   11. Structural studies and valence band splitting parameters in ordered vacancy compound AgGa7Se12 ,Rajani Jacob, R. Geethu, T. Shripathi, V. Ganesan, U. P. Deshpande, Shilpa Tripathi, B. Pradeep, Rachel Reena Philip, Journal of Inorganic and Organometallic Polymers and Materials, 23 (2) (2012) 424-431.
   12. Optoelectronic and Low temperature thermoelectric effects in the OVC n-CuIn3Se5 thin films, Rajani Jacob, R. Geethu, T Shripathi, G S Okram, V Ganesan, B.Pradeep, Urmila K.S and Rachel Reena Philip, physica status solidi (a), 209(11) (2012) 2195-2200.
   13. Solar Cells With High Open Circuit Voltage Using Thiophene Based Synthesized Copolymer, R. Geethu, C. P. Anjali, K. Sreekumar, C. Sudha Kartha, K. P. Vijayakumar, AIP Conf. Proc. 2082, 050002 (2019)
   14. On the improvement of photovoltaic action of ZnO/P3HT:PCBM by roughness of window layer, Geethu R, M. R. Rajesh Menon, C. Sudha Kartha, K. P. Vijayakumar, AIP Conf.  Proc. 1591, 636 (2014).
   15. Preparation and Characterization Of Solar Cell Of A Novel Configuration ITO/n-OVC/p-CIS/In., Geethu R, Dhanya S, Rajani Jacob, Sreenivasan P.V, T. Shripathi and Rachel Reena Philip, AIP Conf. Proc. 1447, 1065 (2012).
   16. Optoelectronic Properties of Nanostructured Cadmium Sulphide thin Films, Geethu R, Dhanya S, Sreenivasan P.V, Namitha Ashokan, Pradeep B, Rachel Reena Philip, AIP Conf. Proc. 1391, 755-757 (2011).
   17. The Effect of Ga Doping on the Physical Properties of Lead Sulphide Thin Films Reshmi Radhakrishnan, Hiba Rahman, Dhanya S., Geethu R, Nafsia Karim, Faseela K, Sreenivasan P.V, Pradeep B, Rachel Reena Philip, AIP Conf. Proc. 1391, 585-587 (2011).

Conference Papers (Presented and Participated): 

1. Go green with light: A review of solar based products, Adithya Raj, Geethu R., Second International Conference on Applied Sciences, SCMS School of Engineering and Technology, Kochi, India, November 24-25, 2022.
2. Solar Energy – A New Perspective of Shine, Jeremy Jacob, Geethu R, Second International Conference on Applied Sciences ,SCMS School of Engineering and Technology, Kochi, India, November 24-25, 2022.
3. Developing ZnO:S nanoparticles for hybrid solar cells, Geethu R, Santhosh M. V., K. Sreekumar, “INVITED TALK”  International Online Conference on Nano Materials, Mahatma Gandhi University, Kottayam, Kerala, India, 12th to 14th August 2022.
4. Morphological modification of zinc oxide nanoparticles by sulphur incorporation, Geethu R., Santhosh M. V., K. Sreekumar, International Conference on Current Trends in Chemistry, organized by CUSAT, during 11th -12th March, 2022.
5. Cost effective method for developing ZnO nano-materials suitable for hybrid solar cell application, Geethu R., K. Sreekumar, International Conference on Emerging Trends in Basic and Applied Science, organized by Department of Basic Science and Humanities, SSET, Karukutty during 16th – 17th December 2021.
6. Micro/nano structured inorganic materials for hybrid solar cell application, Geethu R, K. Sreekumar and K. P. Vijayakumar., “INVITED TALK” on International Online Conference on Nano Materials (ICN 2021) held at Mahatma Gandhi University, Kottayam, Kerala during 09th-11th April 2021.
7. Copper tin sulphide ∶ Possibilities in the field of clean green energy, Geethu, R., Sreekumar, K., Virtual International Conference on Surface Chemistry, SUCH-2020, 27-28 August 2020, Annamalai University, Tamil Nadu.
8. An attempt towards all sprayed organic solar cell, Geethu R., Sreekumar, K., Vijaykumar, K. P., STAM 2020, 14-16 January, Mar Athanasius College, Kothamangalam
9. Hybrid solar cells based on P3HT:PCBM: Effect of different solvents and blend ratio on device performance, R. Geethu., C. Sudha Kartha, K. P. Vijayakumar, National seminar, ASCII 2018, 14-16 February, Department of Instrumentation, CUSAT, Kochi
10. Modification in ZnO morphology and device architecture for improving ZnO/P3HT:PCBM solar cell performance, R. Geethu, K. S. Ranjith, R.T. Rajendra Kumar, K. P. Vijayakumar, International conference ICAPM 2017, 7-9 April, Department of Chemistry, M. G. University, Kottayam.
11. P3HT:PCBM Thin Film Deposition Using Spray Technique For Solar Cell Application: Optimizing Spray Condition, R. Geethu., C. Sudha Kartha, K. P. Vijayakumar, National conference CTric 2017, 2-3 February, Department of Applied Chemistry, CUSAT
12. ITO/ZnO/P3HT:PCBM/Ag Solar Cell Prepared Under Ambient Atmosphere: Effect Of Air Annealing, R. Geethu, C. Sudha Kartha, K. P. Vijayakumar, Kerala Science Congress 2017, 29-30 January, Mar Thoma College Thiruvalla
13. Surface modification of transparent ZnO thin film by controlling temperature and spray rate of CSP technique for solar cell application, R. Geethu, C. Sudha Kartha and  K. P. Vijayakumar, National Conference, TriPS 2015, 30-31 July, Sree Sankara College, Kalady.
14. A Comparative Study Of Micro Sprayed And Spin Coated P3HT:PCBM Thin Films For Optoelectronic Applications, R. Geethu, C. Sudha Kartha, K. Rajeev Kumar and K. P. Vijayakumar, International conference, ICEEE 2015, 5-7 February, organized by CUSAT, Cochin-22.
15. Study on device performance of ITO/ZnO/Polymer/Ag using polymers, MEHPPV  and P3HT, R. Geethu, C. Sudha Kartha, K.P. Vijayakumar, International conference, ICSET 2014, 11-13 Dec at PSG College, Coimbatore.
16. A comparative study on the optoelectronic properties of Ga doped nanostructured films of CdS and PbS, Geethu R, Rajani Jacob, Anees Fatima, Shilpa Tripathi, T.Shripathi and Rachel Reena Philip, Third International conference on frontiers in nanoscience and technology, Cochin nano 2011 held on 14-17 August, at Cochin organised by CUSAT.
17. Preparation and characterization of GaSe, CuGaSe and CuInGaSe thin films, Geethu R, Binitha S., Leena C.M, Neema Raveendran, Rary Varghese Koottala, Dhanya S, Lyjo K. Joseph, Rachel Reena Philip, International Conference on Recent Trends in Material Science and Technology (ICMST), held on 29-31 October, 2010 at Thiruvananthapuram organised by IIST.
18. Morphological, Compositional and Optoelectronic properties of nanostructured Silver Selenide thin films, Rajani Jacob, Geethu R, T.Sripathi, V.Ganesan, Rachel Reena Philip, UGC sponsored National seminar on Emerging Trends in Optoelectronics and Solar energy Nanomarerials, EOSN-2011, Pazhassi Raja NSS college, Mattannur.
19. Optoelectronic properties of nanostructured AgGaSe2 thin film, Rajani Jacob, Geethu R, Rachel Reena Philip, UGC sponsored National seminar on Challenges in Nanoscience and Technology, CNT-2011, July 28-29, 2011, organized by St. Teresa’s College, Ernakulam.

Participated Conferences/ Webinars/FDP

1. ATAL-FDP: Developing consciousness (Transcendental Meditation), October 26th – 30th, organized by Dayalbagh Educational Institute.
2. Two day international webinar, 24 – 25th Sep2021. organized by FISAT
3. FDP on ‘Recent Advancements in Science and Technology, K. R. Mangalam University, 9-13th August 2021
4. National level Mater class webinar on “International Patents in Engineering and Technology, IPET 2021, Amity University, 17 th July
5. FDP on ‘Research Skill Enhancement’, Research Development Cell, Amity University, 21-25th June, 2021                                    
6. Tech Webinar Series- National Technological Day Celebration, Organized by KSCSTE, 11th,12th,14th,17th and 18th of May 2021
7. Awareness on National Digital Library of India held on July 9, 2021 organized by the NDLI Club of SCMS School of Engineering and Technology NDLI Club.
8. FDP: AICTE-ISTE Induction/Refresher Program On “An Effective Pedagogy Practice”, Department of Computer Science and Engineering, K.L.N. College of Engineering, 2021 May (5 days)
9. International Webinar Emerging Trends in the Field of Science and Humanities, FISAT, 2020 October
10. International Webinar on Frontiers in Experimental Physics – IWFEP-2020, Farook College, Kozhikode 2020 August Participated
11. International Webinar on Super Resolution Microscopy, St. Xavier’s College, Aluva, 2020 July
12. National workshop on Energy Materials (EM-2014) Department of Physics, CUSAT, 2014
13. DAE-Solid State Physics Symposium (SSPS-12) Organized by DAE, BARC, IGCAR, at IIT Mumbai, Dec 2012.

Awards and Honours 

• Awardee of UGC-BSR – Research Fellowship in Science for Meritorious Students during doctoral degree period.
• Awarded Scholarship during MSc- based on merit
• College Union – Arts Club Secretary: 2006-2007; St. Xavier’s College for Women Aluva, (2006-2007).
• First prize winner in “Destination Launching” (a documentary presentation) conducted by Bharatha Mata College, Thrikkakara in connection with Voyage 2005, on October 22nd, 2005.
• First prize winner of school and college level different art and sports competitions.
• Best performer – HBcale Lockdown Fest 2020, online talent show organized by Heart Beatz center for arts & life style excellence, Kuwait.
• Invited as a speaker and chair a session in 9th Annual World Congress of Advanced Materials 2022 (WCAM-2022), which will be held in Tokyo, Japan during May 11-13, 2022.

Professional Activities 

• Research project : “Developing cost effective and eco-friendly copper tin sulphide material for photovoltaic application”, 2023- APJAKTU-CERD – Research Seed Money Scheme – Ongoing
• Guiding B Tech students for short projects and writing review articles
• Coordinator : One among the coordinator of Digging Science and Exploring Arts –An extension program School Students organized by Basic Science and Humanities, Department, SSET, Karukutty, 26th September, 2022
• Coordinator : One among the coordinator of National Science Day –competitions for School students and students of SSET, organized by Basic Science and Humanities, Department, SSET, Karukutty, February 2022
• Coordinator : One among the coordinator of ICETBAS-2021– International conference organized by Basic Science and humanities Department, SSET, Karukutty, December 2021
• Speaker: Staff Development Programme: Refresher Workshop on Laboratory Safety   “Rule and Regulations, Precautions and Safe Practices”, Organized by SSET, 10th September, 2021
• Organizer: An online live talk “Breakthrough innovations that transformed the world” by Dr. Poornima N., Assistant Professor, Department of Physics, St. Paul’s College, Kalamassery  for students (B. Tech & M. Tech) on 14th August 2021. 
• Editor – ISBN book – International Conference Proceedings of MatCon -2021
• Chaired a session in the International Online Conference on Nano Materials (ICN 2021) held at Mahatma Gandhi University, Kottayam, Kerala during 09th-11th April 2021.
• Research Paper Reviewer – Proceeding of the International Conference On Advanced Materials: ICAM 2019, AIP Conference Proceedings Vol. 2162, 2019

Technical programs attended 

• National workshop on Energy Materials (EM-2014), organized by Department of Physics, CUSAT
• National workshop on Current Trends in Applied Physics (CTAP)- 2015, organized by Department of Physics, CUSAT
• UGC-sponsored workshop on Material Characterization Tools and Techniques (2015), organized by CAM and Department of Physics, CUSAT
• National workshop on Technology for Aged (NWTA-2015), organized by Centre  for Enabling Technology for Aged, CUSAT

Extra Courses

• Post Graduate Diploma in Computer Application (PGDCA)
• Certificate in Computer Application (CCA) – NOS, Govt. of India, New Delhi
• Diploma in E-Banking