Materials science pv
Download
1 / 23

Materials Science PV - PowerPoint PPT Presentation


  • 122 Views
  • Uploaded on

Materials Science PV. Enn Mellikov. Solar cell. Polycrystalline Si. Tecturing of surface. Thin film solar cell.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Materials Science PV' - akio


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Materials science pv

Materials Science PV

Enn Mellikov






Cu(InGa)Se2-based solar cells have often been touted as being among the most promising of solar cell technologies for cost-effective power generation. This is partly due to the advantages of thin films for low-cost, high-rate semiconductor deposition over large areas using layers only a few microns thick and for fabrication of monolithically interconnected modules. Perhaps more importantly, very high efficiencies have been demonstrated with Cu(InGa)Se2 at both the cell and the module levels.


Cross section of a cu lnga se 2 solar cell
Cross section of a Cu(lnGa)Se2 solar cell




Pseudobinary In2Se3-Cu2Se phase diagram


Defect levels in CuInSe2

Electronic levels of intrinsic defects in CuInSe2. On the left side the theoretical values are presented and on the right side experimentally reported values are presented. The height of histogram columns on the right side represents the spread in experimental data.



Relative metal fluxes and substrate temperature for different coevaporation processes stivity


Chemical bath deposition different coevaporation processes stivity


Chemical bath deposition different coevaporation processes stivity

Deposition of CdS buffer layers on Cu(InGa)Se2 is generally made in an alkaline aqueous solution (pH> 9) of the following three constituents:

1. a cadmium salt; for example, CdS04, CdCl2, CdI2, Cd(CH3COO)2

2. a complexing agent; commonly NH3 (ammonia)

3. a sulphur precursor; commonly SC(NH2)2 (thiourea).


Choise of buffer layer materials different coevaporation processes stivity

The lattice spacing of the (112) planes of CuIn1-xGaxSe2 and the (111) cubic or the (002) bexagonal planes of Cd1-xZnxS


Alternative buffer layers different coevaporation processes stivity


SC parameters different coevaporation processes stivity


SC parameters different coevaporation processes stivity


Adsorbtsion of light different coevaporation processes stivity

Absorption of light with different wavelenghts in Cu(InGa)Se2 with x=0.2


Band diagram of a zno cds cu inga se 2 device at 0 v in the dark
Band diagram of a ZnO/CdS/Cu(InGa)Se different coevaporation processes stivity2 device at 0 V in the dark


Parameters of Solar cells different coevaporation processes stivity


Parameters of solar cells different coevaporation processes stivity

Efficiency ( ) and Voc (•) as a function of Cu(InGa)Se2 band gap, varied by increasing the relative Ga content, The dashed line has slope ΔVoc/ ΔEg = 1


ad