Polydisperse Aggregates of ZnO Nanocrystallites: A Method for Energy‐Conversion‐Efficiency Enhancement in Dye‐Sensitized Solar Cells

Zhang, Zuo‐Feng; Chou, Tammy P.; Russo, Bryan J.; Jenekhe, Samson A.; Cao, Guozhong

doi:10.1002/adfm.200701073

Cited by 286 publications

(207 citation statements)

References 35 publications

(30 reference statements)

Supporting

Mentioning

189

Contrasting

Order By: Relevance

“…It can be synthesized by solution-based or vapor-based methods into various types of nano-structures, ranging from nanoparticles [17,22] over nanorods, [19,23] nanorings, [24] tetrapods, [25] to nanowires. [23,26] We have used a mono-disperse core-shell system with a spherical ZnO core with a diameter of about 5 nm coated with an organic ligand shell of about 1 nm thickness.…”

mentioning

confidence: 99%

Low‐Temperature Solution‐Processed Memory Transistors Based on Zinc Oxide Nanoparticles

Faber¹,

Burkhardt²,

Jedaa³

et al. 2009

Advanced Materials

113

View full text Add to dashboard Cite

On the way towards wide-spread flexible large-area electronics, several features are of particular interest. With focus on low-cost applications, the manufacturing requires high throughput, preferably realized by simple methods on large-area flexible substrates, for example spin coating, [1,2] inkjet-printing [3][4][5] or roll-to-roll techniques.[6] In view of mobile applications with low power consumption, complementary logic circuit designs are beneficial; these require p-channel and n-channel field-effect transistors with large, balanced mobilities and good air stability. For low-temperature-processed p-channel transistors with mobility greater than 1 cm 2

show abstract

mentioning

confidence: 99%

Low‐Temperature Solution‐Processed Memory Transistors Based on Zinc Oxide Nanoparticles

Faber¹,

Burkhardt²,

Jedaa³

et al. 2009

Advanced Materials

113

View full text Add to dashboard Cite

show abstract

“…9c). The enhanced absorption of the ZnO-CNT fiber composite may have been due to chemical bonds between the Zn and carbon [41], oxygen vacancy defects in the presence of the Zn d-d transition [36], carbon doping of the ZnO nanoparticles [42], or multiple light scattering [43] by the ZnO nanospheres (as shown in Fig. 2).…”

Section: Resultsmentioning

confidence: 99%

In Situ Solution Process for Fabricating Thermally and Mechanically Stable Highly Conductive ZnO-CNT Fiber Composites

Hossain

Hahn

2017

Acta Phys. Pol. A

View full text Add to dashboard Cite

A simple in situ solution process was developed to produce a mechanically and thermally stable ZnO-carbon nanotube fiber composite. ZnO nanoparticles were homogeneously deposited onto the surfaces of and interstices within CNT fibers (between individual CNTs). X-ray photoelectron spectroscopy and Raman analysis revealed that ZnO nanoparticles contained oxygen vacancy defects and CNT fibers included oxygen containing functional group that strongly interacted with Zn. The strong interaction enhanced the mechanical properties of the composite fibers. The Young modulus (20 GPa) and tensile strength (118 MPa) were enhanced compared to the corresponding values of the pristine CNT fibers. The thermal stability was high up to 880• C and light absorption was enhanced across the UV to near IR region in a ZnO-CNT fiber composite. The electrical conductivity of the composite was high up to 954 S/cm despite semiconductor deposition.

show abstract

“…Lightscattering centers are formed by submicrometer-sized particles added to a nanocrystalline film. [9][10][11] Some other nanostructures such as nanowires and nanotubes have also been attempted.…”

Section: )mentioning

confidence: 99%

Enhancement of Dye-Sensitized Solar Cell Efficiency by Spherical Voids in Nanocrystalline ZnO Electrodes

Hieu¹,

Dao²,

Vuong³

et al. 2014

Korean. J. Mater. Res.

View full text Add to dashboard Cite

Light scattering enhancement is widely used to enhance the optical absorption efficiency of dye-sensitized solar cells. In this work, we systematically analyzed the effects of spherical voids distributed as light-scattering centers in photoanode films made of an assembly of zinc oxide nanoparticles. Spherical voids in electrode films were formed using a sacrificial template of polystyrene (PS) spheres. The diameter and volume concentration of these spheres was varied to optimize the efficiency of dye-sensitized solar cells. The effects of film thickness on this efficiency was also examined. Electrochemical impedance spectroscopy was performed to study electron transport in the electrodes. The highest power conversion efficiency of 4.07 % was observed with 12 µm film thickness. This relatively low optimum thickness of the electrode film is due to the enhanced light absorption caused by the light scattering centers of voids distributed in the film.

show abstract

Polydisperse Aggregates of ZnO Nanocrystallites: A Method for Energy‐Conversion‐Efficiency Enhancement in Dye‐Sensitized Solar Cells

Cited by 286 publications

References 35 publications

Low‐Temperature Solution‐Processed Memory Transistors Based on Zinc Oxide Nanoparticles

Low‐Temperature Solution‐Processed Memory Transistors Based on Zinc Oxide Nanoparticles

In Situ Solution Process for Fabricating Thermally and Mechanically Stable Highly Conductive ZnO-CNT Fiber Composites

Enhancement of Dye-Sensitized Solar Cell Efficiency by Spherical Voids in Nanocrystalline ZnO Electrodes

Contact Info

Product

Resources

About