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> (2009) Performance limiting factors in flexible, dye solar cell (диссертация, Финляндия)
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PERFORMANCE LIMITING FACTORS IN FLEXIBLE DYE SOLAR CELLS
Doctoral Dissertation (2009)
Источник: http://lib.tkk.fi/Diss/2009/isbn9789512299...89512299010.pdf
Автор: Janne Halme

QUOTE
Table of contents

Preface...........................................................1
List of Publications...................................................5
Abbreviations and symbols ..............................6

1. Introduction............................................................9
1.1. Background and motivation ........... 9
1.2. Objectives and scope.......................... 10
1.3. Outline of the thesis.............................. 12

2. The dye solar cell .................................................14
2.1. Principle of photovoltaic energy conversion................ 14
2.2. Operating principle of the dye solar cell ....... 15

3. Photovoltaic function of dye solar cells..............18
3.1. Short circuit current density ............. 19
3.1.1. Light harvesting efficiency.... 20
3.1.2. Electron injection efficiency .. 22
3.1.3. Electron collection efficiency................ 23
3.2. Open circuit voltage .................. 25
3.3. Fill factor .......................................... 27

4. Performance characterization of dye solar cells ...............29
4.1. Photovoltaic characterization ............................. 30
4.2. Optical characterization ................ 31
4.3. Electrochemical impedance spectroscopy........ 33
4.4. Analysis of the IV curve based on impedance .......39
4.5. Intensity modulated photocurrent and photovolt age spectroscopy ... 40
4.6. Relation between IMPS, IMVS and EIS ... 44

5. Results and Discussion ...........45
5.1. Spray deposition and compression of nanoparticle electrodes on ITOPET plastic substrates (Publication I) ................. 45
5.2. Impedance  spectroscopy  of  pressed  counter  electrodes  on  ITOPET  plastic substrates (Publication II) ......... 47
5.3. Electrochemical   characterization   of   stainless steel   based   dye   solar   cells (Publication III) .............. 49
5.4. Substrate  mediated  recombination  and  contact  resistance  in  pressed  TiO2 photoelectrodes on ITOPET plastic (Publication IV) ............ 50
5.5. Quantitative  estimation  of  the  light  harvesting, electron  injection  and  charge collection efficiencies by optical and IPCE measure ments (Publication V) .......... 51
5.6. Photocurrent limiting factors of pressed TiO2  dye solar cells (Publication V)..... 54
5.7. Effect  of  nonuniform  light  absorption  and inefficient  electron  collection  on  the
IMPS and IMVS response (Publication VI) ... 55
5.8. IMPSratio (Publication VI)........... 58
5.9. Comparison of electron diffusion length determined by different techniques...... 59

6. Summary and Conclusions ..........60
I. Appendix: Time-dependent standard diffusion model
and its solution .............63
References .....................68


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