skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Performance improvement of dye-sensitized solar cell by introducing Sm 3+ /Y 3+ co-doped TiO 2 film as an efficient blocking layer

Authors:
; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Electricity Delivery and Energy Reliability (OE), Power Systems Engineering Research and Development (R&D) (OE-10)
OSTI Identifier:
1396731
Grant/Contract Number:
2006AA05Z417
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Thin Solid Films
Additional Journal Information:
Journal Volume: 631; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-04 15:07:29; Journal ID: ISSN 0040-6090
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Qin, Yiying, Hu, Zhiqiang, Lim, Boon Han, Yang, Bin, Chong, Kok-Keong, Chang, Wei Sea, Zhang, Putao, and Zhang, Haitao. Performance improvement of dye-sensitized solar cell by introducing Sm 3+ /Y 3+ co-doped TiO 2 film as an efficient blocking layer. Netherlands: N. p., 2017. Web. doi:10.1016/j.tsf.2017.03.042.
Qin, Yiying, Hu, Zhiqiang, Lim, Boon Han, Yang, Bin, Chong, Kok-Keong, Chang, Wei Sea, Zhang, Putao, & Zhang, Haitao. Performance improvement of dye-sensitized solar cell by introducing Sm 3+ /Y 3+ co-doped TiO 2 film as an efficient blocking layer. Netherlands. doi:10.1016/j.tsf.2017.03.042.
Qin, Yiying, Hu, Zhiqiang, Lim, Boon Han, Yang, Bin, Chong, Kok-Keong, Chang, Wei Sea, Zhang, Putao, and Zhang, Haitao. Thu . "Performance improvement of dye-sensitized solar cell by introducing Sm 3+ /Y 3+ co-doped TiO 2 film as an efficient blocking layer". Netherlands. doi:10.1016/j.tsf.2017.03.042.
@article{osti_1396731,
title = {Performance improvement of dye-sensitized solar cell by introducing Sm 3+ /Y 3+ co-doped TiO 2 film as an efficient blocking layer},
author = {Qin, Yiying and Hu, Zhiqiang and Lim, Boon Han and Yang, Bin and Chong, Kok-Keong and Chang, Wei Sea and Zhang, Putao and Zhang, Haitao},
abstractNote = {},
doi = {10.1016/j.tsf.2017.03.042},
journal = {Thin Solid Films},
number = C,
volume = 631,
place = {Netherlands},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.tsf.2017.03.042

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

Save / Share:
  • Highlights: • Spherical mesoporous TiO{sub 2} materials were obtained by a simple sol–gel method. • Physical mixture of TiO{sub 2} nanoparticle and mesoporous TiO{sub 2} was utilized for solar cell electrode. • Mixed electrode system exhibited higher DSSC performance. - Abstract: There are two factors on the efficiency of dye-sensitized solar cell (DSSC): one is the amount of dye adsorbed, and the other is contact resistance. In this study, TiO{sub 2} nanoparticles (nano-TiO{sub 2}, about 20 nm particle size) were infiltrated between mesoporous TiO{sub 2} (meso-TiO{sub 2}) particles with about 300 nm particle sizes, in order to reduce the contactmore » resistance of TiO{sub 2} electrodes. The infiltrated nano-TiO{sub 2} can facilitate electron transfer between meso-TiO{sub 2} particles by filling the empty volume of DSSC electrodes. As a result, the TiO{sub 2} electrode containing 65 wt% of meso-TiO{sub 2} and 35 wt% of nano-TiO{sub 2} exhibited the highest performance of DSSC.« less
  • Graphical abstract: - Highlights: • DSSC based on TiO{sub 2} film with 8 printing layers showed the highest efficiency. • The photoelectric conversion efficiency of the DSSC increased from 5.52% to 6.49% by graphene combination. • A mechanism for the enhanced performance of the DSSC was proposed. - Abstract: Dye-sensitized solar cells based on TiO{sub 2} films with different printing layers (6-10) were fabricated by screen printing method. The prepared samples were characterized by scanning electron microscopy, X-ray diffraction and UV–vis absorption spectroscopy. The effects of thickness on the photoelectric conversion performance of the as-fabricated DSSCs were investigated. An optimummore » photoelectric conversion efficiency of 5.52% was obtained in a DSSC with 8 printing layers. Furthermore, after a moderate amount of graphene was combined with TiO{sub 2}, the photoelectric conversion efficiency of the DSSC based on graphene/TiO{sub 2} composite film rose from 5.52% to 6.49%, with an increase of η by 17.6%. The results indicated that graphene not only enhances the transport of electrons from the film to the fluorine doped tin oxide substrates and reduces the charge recombination rate, but also reduces the electrolyte–electrode interfacial resistance, clearly increasing the photoelectric conversion efficiency.« less
  • In this letter, we report perovskite solar cells with thin dense Mg-doped TiO{sub 2} as hole-blocking layers (HBLs), which outperform cells using TiO{sub 2} HBLs in several ways: higher open-circuit voltage (V{sub oc}) (1.08 V), power conversion efficiency (12.28%), short-circuit current, and fill factor. These properties improvements are attributed to the better properties of Mg-modulated TiO{sub 2} as compared to TiO{sub 2} such as better optical transmission properties, upshifted conduction band minimum (CBM) and downshifted valence band maximum (VBM), better hole-blocking effect, and higher electron life time. The higher-lying CBM due to the modulation with wider band gap MgO and themore » formation of magnesium oxide and magnesium hydroxides together resulted in an increment of V{sub oc}. In addition, the Mg-modulated TiO{sub 2} with lower VBM played a better role in the hole-blocking. The HBL with modulated band position provided better electron transport and hole blocking effects within the device.« less
  • Influences of alcoholic solvents for titanium diisopropoxide bis(acetylacetonate) (TPA) precursor solutions on the spray pyrolysis deposited TiO{sub 2} films and the photovoltaic performance of the solid-state dye-sensitized solar cells (SDSCs) using these TiO{sub 2} films as the blocking layers were investigated. Smooth TiO{sub 2} films were obtained by spray pyrolysis deposition of a TPA solution in isopropanol (IPA) at a relatively low temperature of 260 Degree-Sign C. On the other hand, when ethanol was used as solvent, the TiO{sub 2} films fabricated at the same temperature showed much rougher surfaces with many pinholes. Our results showed that ethanol reacts withmore » TPA to form titanium diethoxide bis(acetylacetonate) (TEA), which requires a higher thermal decomposition temperature than that of TPA. SDSCs with TiO{sub 2} blocking layer films fabricated using a TPA solution in IPA showed higher power conversion efficiencies with smaller variations. - Graphical abstract: Alcoholic solvents used for the TiO{sub 2} precursor play a critical role in determining the surface morphology of blocking layers and thus the photovoltaic performance of the SDSCs. Highlights: Black-Right-Pointing-Pointer Solvent influences morphology of spray pyrolysis deposited TiO{sub 2} blocking layer. Black-Right-Pointing-Pointer Ethanol reacts with TPA, resulting poor quality of blocking layer. Black-Right-Pointing-Pointer Isopropanol is better than ethanol for obtaining smooth blocking layer. Black-Right-Pointing-Pointer SDSC with blocking layer made with isopropanol showed better performance.« less
  • Graphical abstract: - Highlights: • TiO{sub 2} film electrodes have been successfully sensitized with CdS QDs. • DSSC based on CdS QDs-sensitized TiO{sub 2} film with 4 min has the highest efficiency. • CdS QDs can improve the electron transport and reduce the electron recombination. • Our work open up a new avenue for the development of DSSCs. - Abstract: The TiO{sub 2} film electrodes sensitized with CdS quantum dots (QDs) via chemical bath deposition method were successfully prepared as the photoanode of dye-sensitized solar cells (DSSCs). Microstructural characterizations by XRD, SEM, TEM and EDX show that the CdS nanocrystalsmore » with the cubic structure have intimate contact to the TiO{sub 2} films. The amount of CdS QDs can be controlled by varying the dipping time. The experiment results demonstrate that the CdS QDs-sensitized solar cells show a wider absorption in the solar spectrum and an enhanced surface photovoltage response. The maximal photoelectric conversion efficiency of 5.57% was achieved by the DSSC based on CdS QDs-sensitized TiO{sub 2} film with 4 min. The performance improvement is ascribed to the enhancement of electron transport, the reduction of electron recombination and the long electron lifetime.« less