Effective Passivation of Nanostructured TiO2 Interfaces with PEG-Based Oligomeric Coadsorbents To Improve the Performance of Dye-Sensitized Solar Cells

View Author Information
The National Creative Research Initiative Center for Intelligent Hybrids, The WCU Program on Chemical Convergence for Energy and Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Korea
WCU Department of Energy Engineering and Center for Next Generation Dye-Sensitized Solar Cells, Hanyang University, Seoul 133-791, Korea
Cite this: J. Phys. Chem. C 2012, 116, 11, 6770–6777
Publication Date (Web):February 27, 2012
https://doi.org/10.1021/jp210360n
Copyright © 2012 American Chemical Society
Article Views
1343
Altmetric
-
Citations
LEARN ABOUT THESE METRICS
Read OnlinePDF (5 MB)
Supporting Info (1)»

Abstract

A novel poly(ethylene glycol) (PEG) based oligomeric coadsorbent was employed to passivate TiO2 photoanodes resulting in the large increase in both open-circuit voltage (Voc) and short-circuit current density (Jsc) primarily because of the reduced electron recombination by the effective coverage of vacant sites as well as the negative band-edge shift of TiO2. The effective suppression of electron recombination was evidenced by electrochemical impedance spectroscopy (EIS) and by stepped light-induced transient measurements of photocurrent and voltage (SLIM-PCV). The work function measurements also showed that the existence of coadsorbents on TiO2 interfaces is capable of shifting the band-edge of TiO2 photoanodes upwardly resulting in the increase in photovoltage. In addition, the coadsorbent was proven to be effective even in the presence of common additives such as LiI, 4-tert-butylpyridine, and guanidinium thiocyanate. The effect of Li+ cation trapping by ethylene oxide units of the coadsorbent was particularly notable to significantly increase Voc at a small expense of Jsc. Consequently, the introduction of novel PEG-based oligomeric coadsorbents for TiO2 photoanodes is quite effective in the improvement of photovoltaic performance because of the simultaneous increase in both Voc and Jsc.

Supporting Information

ARTICLE SECTIONS
Jump To

Comparison of JV characteristics of DSSCs with TiO2 photoanodes passivated with oligomeric mPEG-succinic acid coadsorbents by adopting two different adsorption protocols (i.e., the simultaneous adsorption and the sequential adsorption) measured under 1 sun illumination (AM 1.5, 100 mW/cm2 with shading masks); energy-dispersive X-ray spectroscopic (EDXS) results for the bare TiO2 and the surface-passivated TiO2 by the oligomeric mPEG-succinic acid coadsorbent and photovoltage transient of DSSCs with TiO2 photoanodes passivated with oligomeric mPEG-succinic acid coadsorbents by SLIM-PCV. This material is available free of charge via the Internet at http://pubs.acs.org.

Terms & Conditions

Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

Cited By


This article is cited by 29 publications.

  1. Daniela F. S. L. Rodrigues, Fátima Santos, Carlos M. R. Abreu, Jorge F. J. Coelho, Arménio C. Serra, Dzmitry Ivanou, Adélio Mendes. Passivation of the TiO2 Surface and Promotion of N719 Dye Anchoring with Poly(4-vinylpyridine) for Efficient and Stable Dye-Sensitized Solar Cells. ACS Sustainable Chemistry & Engineering 2021, 9 (17) , 5981-5990. https://doi.org/10.1021/acssuschemeng.1c00842
  2. Sanghyuk Wooh, Tea-Yon Kim, Donghoon Song, Yong-Gun Lee, Tae Kyung Lee, Victor W. Bergmann, Stefan A. L. Weber, Juan Bisquert, Yong Soo Kang, and Kookheon Char . Surface Modification of TiO2 Photoanodes with Fluorinated Self-Assembled Monolayers for Highly Efficient Dye-Sensitized Solar Cells. ACS Applied Materials & Interfaces 2015, 7 (46) , 25741-25747. https://doi.org/10.1021/acsami.5b07211
  3. Alagar Ramar, Ramiah Saraswathi, Muniyandi Rajkumar, and Shen-Ming Chen . Influence of Poly(N-vinylcarbazole) as a Photoanode Component in Enhancing the Performance of a Dye-Sensitized Solar Cell. The Journal of Physical Chemistry C 2015, 119 (42) , 23830-23838. https://doi.org/10.1021/acs.jpcc.5b06582
  4. Gyu Leem, Zachary A. Morseth, Egle Puodziukynaite, Junlin Jiang, Zhen Fang, Alexander T. Gilligan, John R. Reynolds, John M. Papanikolas, and Kirk S. Schanze . Light Harvesting and Charge Separation in a π-Conjugated Antenna Polymer Bound to TiO2. The Journal of Physical Chemistry C 2014, 118 (49) , 28535-28541. https://doi.org/10.1021/jp5113558
  5. Mukes Kapilashrami, Yanfeng Zhang, Yi-Sheng Liu, Anders Hagfeldt, and Jinghua Guo . Probing the Optical Property and Electronic Structure of TiO2 Nanomaterials for Renewable Energy Applications. Chemical Reviews 2014, 114 (19) , 9662-9707. https://doi.org/10.1021/cr5000893
  6. Donghoon Song, Woohyung Cho, Jung Hyun Lee, and Yong Soo Kang . Toward Higher Energy Conversion Efficiency for Solid Polymer Electrolyte Dye-Sensitized Solar Cells: Ionic Conductivity and TiO2 Pore-Filling. The Journal of Physical Chemistry Letters 2014, 5 (7) , 1249-1258. https://doi.org/10.1021/jz5002727
  7. Miriam Mba, Marco D’Acunzo, Patrizio Salice, Tommaso Carofiglio, Michele Maggini, Stefano Caramori, Alessandra Campana, Alessandro Aliprandi, Roberto Argazzi, Stefano Carli, and Carlo A. Bignozzi . Sensitization of Nanocrystalline TiO2 with Multibranched Organic Dyes and Co(III)/(II) Mediators: Strategies to Improve Charge Collection Efficiency. The Journal of Physical Chemistry C 2013, 117 (39) , 19885-19896. https://doi.org/10.1021/jp4067586
  8. B. Hemavathi, Kusuma Jagadish, T.N. Ahipa, R. Geetha Balakrishna. Fabrication of TiO2/poly (3-Cyanopyridine-fluorene) hybrid nanocomposite as electron transport layer for dye sensitized solar cell. Journal of Electroanalytical Chemistry 2019, 838 , 136-141. https://doi.org/10.1016/j.jelechem.2019.03.003
  9. Haoliang Cheng, Min Wang, Yaru Li, Guanyu Zhao, Zhong-Sheng Wang. An imidazolium iodide salt as a bifunctional co-adsorbent for quasi-solid-state dye-sensitized solar cells: improvements of electron lifetime and charge collection efficiency. Journal of Materials Chemistry A 2019, 7 (6) , 2702-2708. https://doi.org/10.1039/C8TA11333E
  10. Long Zhao. Application of stepped light-induced transient measurements of photocurrent and photovoltage in charge-transfer mechanism characterization. Journal of the Chinese Chemical Society 2018, 65 (11) , 1281-1285. https://doi.org/10.1002/jccs.201800196
  11. Gopika Gopakumar, Aditya Ashok, S.N. Vijayaraghavan, Shantikumar V. Nair, Mariyappan Shanmugam. MoO3 surface passivation on TiO2: An efficient approach to minimize loss in fill factor and maximum power of dye sensitized solar cell. Applied Surface Science 2018, 447 , 554-560. https://doi.org/10.1016/j.apsusc.2018.04.013
  12. Hammad Cheema, Khurram S. Joya. Titanium Dioxide Modifications for Energy Conversion: Learnings from Dye-Sensitized Solar Cells. 2018,,https://doi.org/10.5772/intechopen.74565
  13. N. E. Ryall, R. Crook, J. A. Weinstein. A dye-sensitised Schottky junction device fabricated from nanomaterials on a stainless steel substrate. Materials Research Innovations 2018, 22 (4) , 231-236. https://doi.org/10.1080/14328917.2017.1302154
  14. Yan Xie, Liang Wu, Liang Han, Jianrong Gao. Co‐sensitization by triarylamine dyes for improved dye‐sensitized solar cells. physica status solidi (a) 2017, 214 (7) , 1600938. https://doi.org/10.1002/pssa.201600938
  15. Alagar Ramar, Ramiah Saraswathi, Muniyandi Rajkumar, Shen-Ming Chen. TiO2/polyisothianaphthene—A novel hybrid nanocomposite as highly efficient photoanode in dye sensitized solar cell. Journal of Photochemistry and Photobiology A: Chemistry 2016, 329 , 96-104. https://doi.org/10.1016/j.jphotochem.2016.05.028
  16. A. Aashish, R. Ramakrishnan, J.D. Sudha, M. Sankaran, G. Krishnapriya. Self-assembled hybrid polyvinylcarbazole–titania nanotubes as an efficient photoanode for solar energy harvesting. Solar Energy Materials and Solar Cells 2016, 151 , 169-178. https://doi.org/10.1016/j.solmat.2016.03.007
  17. Vibha Saxena, D K Aswal. Surface modifications of photoanodes in dye sensitized solar cells: enhanced light harvesting and reduced recombination. Semiconductor Science and Technology 2015, 30 (6) , 064005. https://doi.org/10.1088/0268-1242/30/6/064005
  18. Victoria S. Manthou, Eleftherios K. Pefkianakis, Polycarpos Falaras, Georgios C. Vougioukalakis. Co-Adsorbents: A Key Component in Efficient and Robust Dye-Sensitized Solar Cells. ChemSusChem 2015, 8 (4) , 588-599. https://doi.org/10.1002/cssc.201403211
  19. Jeeae Heo, P. Sudhagar, Hyungkwon Park, Woohyung Cho, Yong Soo Kang, Changhee Lee. Room Temperature Synthesis of Highly Compact TiO2 Coatings by Vacuum Kinetic Spraying to Serve as a Blocking Layer in Polymer Electrolyte-Based Dye-Sensitized Solar Cells. Journal of Thermal Spray Technology 2015, 24 (3) , 328-337. https://doi.org/10.1007/s11666-014-0204-0
  20. Lei Wang, Xichuan Yang, Xiuna Wang, Licheng Sun. Novel organic dyes with anchoring group of quinoxaline-2, 3-diol and the application in dye-sensitized solar cells. Dyes and Pigments 2015, 113 , 581-587. https://doi.org/10.1016/j.dyepig.2014.09.019
  21. Yong-Gun Lee, Donghoon Song, June Hyuk Jung, Sanghyuk Wooh, Suil Park, Woohyung Cho, Wei Wei, Kookheon Char, Yong Soo Kang. TiO 2 surface engineering with multifunctional oligomeric polystyrene coadsorbent for dye-sensitized solar cells. RSC Advances 2015, 5 (84) , 68413-68419. https://doi.org/10.1039/C5RA12889G
  22. Aaron Breivogel, Sanghyuk Wooh, Jan Dietrich, Tea Yon Kim, Yong Soo Kang, Kookheon Char, Katja Heinze. Anchor‐Functionalized Push‐Pull‐Substituted Bis(tridentate) Ruthenium(II) Polypyridine Chromophores: Photostability and Evaluation as Photosensitizers. European Journal of Inorganic Chemistry 2014, 2014 (16) , 2720-2734. https://doi.org/10.1002/ejic.201402091
  23. Yavar T. Azar, Mahmoud Payami. Efficiency enhancement of black dye-sensitized solar cells by newly synthesized D–π–A coadsorbents: a theoretical study. Phys. Chem. Chem. Phys. 2014, 16 (20) , 9499-9508. https://doi.org/10.1039/C4CP00598H
  24. K. L. Vincent Joseph, A. Anthonysamy, P. Sudhagar, Woohyung Cho, Young Soo Kwon, Taiho Park, Yong Soo Kang, Jin Kon Kim. Ruthenium( ii ) quasi-solid state dye sensitized solar cells with 8% efficiency using a supramolecular oligomer-based electrolyte. J. Mater. Chem. A 2014, 2 (33) , 13338-13344. https://doi.org/10.1039/C4TA02284J
  25. Hui Li, Yongzhen Wu, Zhiyuan Geng, Jingchuan Liu, Dandan Xu, Weihong Zhu. Co-sensitization of benzoxadiazole based D–A–π–A featured sensitizers: compensating light-harvesting and retarding charge recombination. J. Mater. Chem. A 2014, 2 (35) , 14649-14657. https://doi.org/10.1039/C4TA02777A
  26. Xiaojia Zheng, Dongqi Yu, Feng-Qiang Xiong, Mingrun Li, Zhou Yang, Jian Zhu, Wen-Hua Zhang, Can Li. Controlled growth of semiconductor nanofilms within TiO2 nanotubes for nanofilm sensitized solar cells. Chemical Communications 2014, 50 (33) , 4364. https://doi.org/10.1039/c3cc49853k
  27. Shufang Zhang, Xudong Yang, Chuanjiang Qin, Youhei Numata, Liyuan Han. Interfacial engineering for dye-sensitized solar cells. Journal of Materials Chemistry A 2014, 2 (15) , 5167. https://doi.org/10.1039/c3ta14392a
  28. Tao Liu, Alessandro Troisi. Theoretical evidence of multiple dye regeneration mechanisms in dye-sensitized solar cells. Chemical Physics Letters 2013, 570 , 159-162. https://doi.org/10.1016/j.cplett.2013.03.071
  29. Jing Xu, Hongwei Wu, Xinru Jia, Hany Kafafy, Dechun Zou. Amidoamine dendron-based co-adsorbents: improved performance in dye-sensitized solar cells. Journal of Materials Chemistry A 2013, 1 (46) , 14524. https://doi.org/10.1039/c3ta12817b