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Dssc Schematic
 

Dssc Schematic

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Schematic Representation of Dye-Sensitized Solar Cells

Schematic Representation of Dye-Sensitized Solar Cells

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    Dssc Schematic Dssc Schematic Presentation Transcript

    • Dye-Sensitised Solar Cells Energy Level Representation Michael Seery
    • DSSC: Energy Levels Representation LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • 1: Incident light results in excited state dye D* D  D* DSSC: Energy Levels Representation 1 LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • 1: Incident light results in excited state dye D* D  D* DSSC: Energy Levels Representation 2: Electron transfer from D* to CB D*  D + + e - LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red 2
    • 3,4: Electron passes through circuit e - (WE)  e- (CE) + electricity 4 2: Electron transfer from D* to CB D*  D + + e - 1: Incident light results in excited state dye D* D  D* LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • 5: Reductor is regenerated Ox + e -  Red 3,4: Electron passes through circuit e - (WE)  e- (CE) + electricity 2: Electron transfer from D* to CB D*  D + + e - 1: Incident light results in excited state dye D* D  D* LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red 5
    • 6: Dye is regenerated Red + D +  Ox + D RESULT h   electricity 5: Reductor is regenerated Ox + e -  Red 3,4: Electron passes through circuit e - (WE)  e- (CE) + electricity 2: Electron transfer from D* to CB D*  D + + e - 1: Incident light results in excited state dye D* D  D* LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red 6
    • D + h   D* D*  D + + e - e - (WE)  e- (CE) + electricity Ox + e -  Red Red + D +  Ox + D ________________________ h   electricity Summary Think about where there may be sources of inefficiency
    • Efficiency LHE Light Harvesting Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • Efficiency  inj Electron Injection Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • Efficiency  c Charge Collection Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
    • Efficiency Incident Photon to Current Efficiency IPCE (  )  LHE (  ) x  inj x  c LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red