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Dssc Schematic
- 1. Dye-Sensitised Solar Cells Energy Level Representation Michael Seery
- 2. DSSC: Energy Levels Representation LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
- 3. 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
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. 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
- 9. Efficiency LHE Light Harvesting Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
- 10. Efficiency inj Electron Injection Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
- 11. Efficiency c Charge Collection Efficiency LOAD Semiconductor Adsorbed Dye Electrolyte Transparent coated electrode Platinized Transparent coated electrode D* D/D + VB CB Ox/Red
- 12. 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