Thin-Film PV Technologies Organic PV Technology Week 5.5 Arno - - PowerPoint PPT Presentation

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Thin-Film PV Technologies Organic PV Technology Week 5.5 Arno - - PowerPoint PPT Presentation

Feb 03, 2023 373 likes •581 views

Thin-Film PV Technologies Organic PV Technology Week 5.5 Arno Smets Organic Solar Cells Source: Siemens Organic Materials Source: Lectures Tom Savenije, TUDelft Conjugated systems: Benzene Source: Wikipedia Conjugated systems: Benzene

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SLIDE 1

Arno Smets

Thin-Film PV Technologies

Organic PV Technology

Week 5.5

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SLIDE 2

Organic Solar Cells

Source: Siemens

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SLIDE 3

Organic Materials

Source: Lectures Tom Savenije, TUDelft

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SLIDE 4

Conjugated systems: Benzene

Source: Wikipedia

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SLIDE 5

Conjugated systems: Benzene

Source: Wikipedia

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SLIDE 6

-orbital

Source: Wikipedia

C = C H H H H C = C H H H H

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SLIDE 7

Molecular description of band gap

sp3 sp3 Bonding Anti-Bonding

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SLIDE 8

Molecular description of band gap

pz pz HOMO Bonding Anti-Bonding LUMO

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SLIDE 9

HOMO and LUMO

HOMO LUMO

Source: Lectures Tom Savenije, TUDelft

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SLIDE 10

Electron donor and acceptor materials

HOMO LUMO Vacuum Level

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SLIDE 11

Electron donor and acceptor materials

Ionization Energy

HOMO LUMO Vacuum Level

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SLIDE 12

Electron donor and acceptor materials

Ionization Energy

HOMO LUMO HOMO LUMO Electron Affinity Vacuum Level

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SLIDE 13

Electron donor and acceptor materials

Ionization Energy

HOMO LUMO HOMO LUMO Electron Affinity Electron Donor Electron Acceptor Vacuum Level

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SLIDE 14

Electron donor and acceptor materials

HOMO LUMO HOMO LUMO Electron Donor Electron Acceptor Vacuum Level

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SLIDE 15

Electron donor and acceptor materials

HOMO LUMO HOMO LUMO Electron Donor Electron Acceptor Vacuum Level

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SLIDE 16

Organic solar cell

Electrode 1 (ITO, METAL) Electron donor Electron acceptor Electrode 2 (Al, Mg, Ca) Ldif

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SLIDE 17

Bulk Heterojunction Organic solar cell

Electrode 1 (ITO, METAL) Electron acceptor Electrode 2 (Al, Mg, Ca) Electrode 2 (ITO, metal) Dispersed hetreojunction

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SLIDE 18

Transparent Electrode Counter Electrode Electrolyte Light

TiO2

l3 3l

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SLIDE 19

Principle of Dye Sensitized Solar Cell

Val. Cond. HOMO LUMO

Dye TiO2

S* S

I3

  • I-

Electrolyte Pt

2Dye+ + 3I-  2Dye + I3

  • I3
  • + 2e-  3I-

Dye+

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SLIDE 20

Dye-Sensitized Solar Cells