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AlGaP/GaAs Epi Wafer for Solar Cell
 
Thanks to GaAs tunnel junction technology, we offer epi wafers of single-junction and dual-junction InGaP/GaAs solar cells,with different structures of epitaxial layers  (AlGaAs,InGaP) grown on GaAs for solar cell application.And now we offer a epi wafer structure with InGaP tunnel junction as follows:
 

 

AR coating MgF2/ZnS

Au

Frount contact

 

 

Au-Ge/Ni/Au

 

 

n+-GaAs 0.3μm

 

n+-AlInP 0.03 μm       <2×1018cm-3(Si)

Window

InGaP

n+-InGaP 0.05μm       2.0×1018cm-3(Si)

n

(Eg=1.88eV)

p+-InGaP 0.55μm       1.5×1017cm-3(Zn)

p

top cell

p+-InGaP 0.03μm       2.0×1018cm-3(Zn)

p+

         

p+-AlInP 0.03μm        5×1017cm-3(Zn)

BSF,diff.barrier

Tunnel

p+-InGaP 0.015μm       8.0×1018cm-3(Zn)

TN(p+)

junction

n+-InGaP 0.015μm       1.0×1019cm-3(Si)

TN(n+)

          

n+-AlInP 0.05μm         1.0×1019cm-3(Si)

Window,diff.barrier

GaAs  (Eg=1.43 eV)  bottom cell

n+-GaAs 0.1μm          2.0×1018cm-3(Si)

n

p -GaAs 3.0μm          1.0×1017cm-3(Zn)

p

          

p+-InGap 0.1μm          2.0×1018cm-3(Zn)

BSF

 

p+-GaAs 0.3μm          7.0×1018cm-3(Zn)

 

 

p+-GaAs substrate       1.0×1019cm-3(Zn)

substrate

 

  Au

 

 

Back contact

 

Note:LEDs, LASERs and Multi-junction Solar Cells can all employ tunnel junctions to improve performance. Calculating the effects of this junction is tricky, but there are ways to accurately simulate chip characteristics and cost-effectively optimize the structure’s design.
 
Source: PAM-XIAMEN
 
If you need more information about AlGaP/GaAs Epi Wafer for Solar Cell, please visit our website:http://www.powerwaywafer.com/, send us email at sales@powerwaywafer.com or powerwaymaterial@gmail.com