Improved performance of dye-sensitized solar cells with TiO2/alumina core–shell formation using atomic layer deposition

Veerappan, Ganapathy; Karunagaran, B.; Rhee, Shi‐Woo

doi:10.1016/j.jpowsour.2010.01.085

Cited by 132 publications

(98 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CBD and reactive direct-current magnetron sputtering are also employed for surface modification. The ALD technique and pulsed laser deposition (PLD) technique are used for controlled thickness deposition [76,77]. As compared to ALD, PLD requires higher sintering temperatures and longer fabrication times.…”

Section: Methods For Surface Modificationsmentioning

confidence: 99%

Improving the efficiency of dye-sensitized solar cells by photoanode surface modifications

Sun

Dou

et al. 2016

Sci. China Mater.

View full text Add to dashboard Cite

Dye-sensitized solar cells (DSSCs) provide a promising alternative solar cell technology because of their high efficiency, environmental friendliness, easy fabrication, and low cost. Power conversion efficiency is an important parameter to measure the performance of DSSCs, but the severe charge recombination that occurs at the photoanode hinders the future improvement of power conversion efficiency. Therefore, one of the key goals for achieving high efficiency is to reduce the energy loss caused by the unwanted charge recombination at various interfaces. From this perspective, surface modification of the photoanode is the simplest method among the various approaches available in the literature for enhancing the performance of DSSCs by inhibiting the interfacial charge recombination. After some brief notes on DSSCs, in this review, we present a comprehensive discussion on surface modifications of different photoanodes that have been adopted in the literature not only for reducing recombination but also for enhancing light harvesting. Depending on the electrode materials, we discuss surface modifications of binary oxides such as TiO2 and ZnO and ternary oxides, including Zn2SnO4, SrSnO3, and BaSnO3. We also talk about methods of surface modification and the materials suitable for surface treatment. Finally, we end with a brief future outlook of DSSCs.

show abstract

Section: Methods For Surface Modificationsmentioning

confidence: 99%

Improving the efficiency of dye-sensitized solar cells by photoanode surface modifications

Sun

Dou

et al. 2016

Sci. China Mater.

View full text Add to dashboard Cite

show abstract

“…Using these parameters mentioned above, researchers can compare electron transport and diffusion property at different photoanodes in DSSC, such as photoanodes made of different materials (e.g., TiO 2 or combined oxides) [79][80][81][82][83][84][85][86][87], different morphologies and different structures (e.g., nanoparticles, nanotubes, nanorods, or complex structures) [88][89][90][91][92][93][94][95][96], different crystal forms (e.g., anatase and rutile for TiO 2 ) [97], and different substrates (e.g., rigid or flexible) [90,98]. For instance, we used EIS to compare two different microspheres photoanode-based DSSC, and the obtained Nyquist plots were shown in Fig.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Zheng

Wen

et al. 2015

Science Bulletin

View full text Add to dashboard Cite

“…Fig. 10 presents the results using Nyquist plots with the three distinctive semicircles [11,29,30]. The first semicircle is attributed to the impedance of the charge transfer process at the counter electrode/electrolyte interface; the second semicircle is ascribed to the impedance of the charge transfer process at the working electrode/electrolyte interface; and the third semicircle is related to the Nernstian diffusion in the electrolyte.…”

Section: Photovoltaic Performances Of Dsscs Using Carbon-incorporatedmentioning

confidence: 99%

“…This indicates a lower interfacial charge transfer resistance and hence a higher charge transfer efficiency. These results can also be viewed using Bode plots as shown in Figure 11, which enables information to be extracted about the electron lifetime within the photoanodes [11,29,30]. These plots indicated electron lifetimes of approximately 14 milliseconds for the TiO 2 and 33 milliseconds for the 8.4%…”

Section: Photovoltaic Performances Of Dsscs Using Carbon-incorporatedmentioning

confidence: 99%

Achieving enhanced DSSC performance by microwave plasma incorporation of carbon into TiO2 photoelectrodes

Dang¹,

MacElroy²,

Dowling³

2013

Applied Surface Science

View full text Add to dashboard Cite

The photoactivity of carbon-incorporated titanium dioxide (TiO 2 ) has been widely reported. This study involves a novel approach to the incorporation of carbon into TiO 2 through the use of microwave plasma processing. The process involved thermally treating printed TiO 2 nanoparticle coatings in a microwave-induced argon-oxygen plasma containing low concentrations of methane. The resulting deposited carbon layer was characterized using XRD, XPS, Raman, UV-VIS, ellipsometry, and optical profilometry. It was found that methane gas had been dissociated in the microwave plasma into carbon species, which were then deposited as a nm-thick layer onto the TiO 2 coatings, most likely in the form of graphite. The photovoltaic performances of both the TiO 2 and the carbon-incorporated TiO 2 were assessed through J-V and IPCE measurements of the N719-sensitized solar cells using the titania as their photoanodes. Up to a 72% improvement in the maximum power density (P d-max ) was observed for the carbonincorporated TiO 2 samples as compared to the TiO 2, onto which no carbon was added. This improvement was found to be mainly associated with an increase in the short-circuit current density (J sc ), but independent from the open-circuit voltage (V oc ), the filter factor (FF), and the level of dye adsorption. Possible contributory factors to the improved performance of the carbonincorporated TiO 2 were the enhanced electron conductivity and electron lifetime, both of which were elucidated through electrochemical impedance spectroscopy (EIS). When the surface layer was examined using XPS, the optimal carbon content on the TiO 2 coating surface was found to be 8.4%, beyond which there was a reduction in the DSSC efficiency.

show abstract

Improved performance of dye-sensitized solar cells with TiO2/alumina core–shell formation using atomic layer deposition

Cited by 132 publications

References 28 publications

Improving the efficiency of dye-sensitized solar cells by photoanode surface modifications

Improving the efficiency of dye-sensitized solar cells by photoanode surface modifications

Electrochemical methods for the characterization and interfacial study of dye-sensitized solar cell

Achieving enhanced DSSC performance by microwave plasma incorporation of carbon into TiO2 photoelectrodes

Contact Info

Product

Resources

About