Potential of amorphous silicon for solar cells
If you can't read please download the document
description
Potential of amorphous silicon for solar cells. Appl. Phys. A 69, 155–167 (1999) / Digital Object Identifier (DOI) 10.1007/s003399900064 B. Rech , H. Wagner. 蕭子軒. Outline. 1. Fundamental properties of a- Si:H and its alloys 2. Solar cells based on a- Si:H - PowerPoint PPT Presentation
Transcript of Potential of amorphous silicon for solar cells
1
Potential of amorphous silicon for solar cellsAppl. Phys. A 69, 155167 (1999) / Digital Object Identifier (DOI) 10.1007/s003399900064B. Rech, H. Wagner1Outline1. Fundamental properties of a-Si:H and its alloys2. Solar cells based on a-Si:H3. Light trapping and TCO development
2Fundamental properties of a-Si:H and its alloysDisorder and the high content of bonded hydrogenhigh optical absorption coefficients and recombination lossesSWEPECVDBand gap is around 1.7 eV .(C , Ge)P-i-n and n-i-p3a-Si:H p-i-n solar cell4
FF & jsc V.S. i-layer5
Stacked cellsImprove the light stability Use different band gaps for the component cells6
a-Si:H/a-Si:H/a-SiGe:H triple-junction solar cell7
Cell structures8
8Roll-to-roll9
TCO low electrical and optical losses, refractive index matching and light scatteringback reflection (with metal) ITOZnOSnO2Sputteretch10Superstrate technology11
Superstrate technology12
Substrate technology13
Substrate technology14
Examples of highly efficient a-Si-based solar cells
15
SummaryStabilized efficiencies exceeding 10% 13% for an a-Si:H/a-SiGe:H/a-SiGe:H triple-junction solar cell.amorphous silicon solar cell technology holds a great potential to become a major energy source in the next century. 16Thanks for your attention
17
