1 / 11

Characterization of CuInSe 2 Thin Films for Photovoltaics

Characterization of CuInSe 2 Thin Films for Photovoltaics. Celina S. Dozier FAMU-FSU: Dr. Eric Kalu CMU: Dr. Paul Salvador. ZnO. CuInSe 2. e - Collecting Plate Ni. Substrate. Background. What is Photovoltaics? Process of converting sunlight into electricity

akina
Télécharger la présentation

Characterization of CuInSe 2 Thin Films for Photovoltaics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Characterization of CuInSe2 Thin Films for Photovoltaics Celina S. Dozier FAMU-FSU: Dr. Eric Kalu CMU: Dr. Paul Salvador

  2. ZnO CuInSe2 e- Collecting Plate Ni Substrate Background • What is Photovoltaics? • Process of converting sunlight into electricity • A potential energy barrier that separate electrons and holes that are created by the absorption of sunlight • Creates a current

  3. Semiconducting Materials • Qualities of a good PV material: • Strong light absorption • Low cost • Stability as functions of both time and illumination conditions • High abundance of source materials • Environmentally friendly technology

  4. Copper Indium Diselenide • Conversion efficiencies of 17.8% have been reached for vapor-deposited CIS cells • The chalcopyrite structure of ternary I-III-VI2 compounds have high absorption coefficients making CIS well-suited for solar cells • Bandgap of 1.02 eV

  5. Experiment • Production Procedure • Nickel is plated on Kapton/Mylar • A three-electrode setup used to deposit CIS • CIS was electrochemically deposited at the following potentials for 5 minutes: -0.35V, -0.55V, -0.75V, -1.0V, -1.1V • How does varying the deposition potential affect the lattice structure of CIS and surface morphology?

  6. Theoretical X-Ray Pattern

  7. CIS onKapton

  8. Mylar Thin Films

  9. AFM Results 20 µm 20 µm Potential: -0.35 V Unannealed RMS Roughness: 654Å Grayscale: 0.5 µm Potential: -0.55 V Unannealed RMS Roughness: 666Å Grayscale: 0.60 µm

  10. Conclusion • As the deposition potential becomes more negative the roughness increases • The X-Ray patterns of the CuInSe2 films that were grown do not have significant similarities to the theoretical CuInSe2 X-Ray patterns

  11. Acknowledgements • Dr. Eric Kalu • Dr. Paul Salvador • Graduate students (Andy, Bala, Nitin, Sukwon, and Pat) • CMU Materials Science Engineering Department

More Related