Role of One-Dimensional Ribbonlike Nanostructures in Dye-Sensitized TiO<sub>2</sub>-Based Solar Cells

Chen, Jiazang; Li, Bo; Zheng, Jianfeng; Jia, Suping; Zhao, Jianghong; Jing, Huanwang; Zhu, Zhenping

doi:10.1021/jp2004369

Cited by 38 publications

(42 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Kinetic Model and Interpretation Of Kinetic Constantsmentioning

confidence: 99%

“…Sometimes we can express impedance parameters in terms of either set, as shown in Equations (11), (15), and (20). It should be emphasized that some impedance elements effectively depend only on the free carriers, as in Equations (15) and (20). However, below we show that c tot m , including the capacitance of the traps, also appears in the impedance functions, which is indicative of the fact that we cannot get rid of the traps.…”

Section: Kinetic Model and Interpretation Of Kinetic Constantsmentioning

confidence: 99%

See 1 more Smart Citation

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

2013

View full text Add to dashboard Cite

The diffusion–recombination model is a key tool in understanding the photovoltaic operation of solar cells. Dye‐sensitized solar cells, organic solar cells, and inorganic semiconductor solar cells are systems affected by disorder that are often characterized with impedance spectroscopy. In this paper, we extend the previous theory of diffusion–recombination impedance including traps and nonlinear recombination. We show the transmission line equivalent circuit representation, and we describe the physical meaning of a number of model parameters that can be obtained: the chemical capacitance, ${C_\mu }$; the recombination resistance, ${R_{{\rm{rec}}} }$; the transport resistance, ${R_{{\rm{tr}}} }$; the electron lifetime, ${\tau _n }$; the electron conductivity, ${\sigma _n }$; the chemical diffusion coefficient of electrons, ${D_n }$; and the diffusion length, ${L_n }$. At most, three of these parameters are independent, but if the diffusion length is short, the impedance model collapses to a function that has one degree of freedom less, known as the Gerischer impedance. We show the connection of the two parameters that remain to the diffusion length and the lifetime.

show abstract

Section: Kinetic Model and Interpretation Of Kinetic Constantsmentioning

confidence: 99%

Section: Kinetic Model and Interpretation Of Kinetic Constantsmentioning

confidence: 99%

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

2013

View full text Add to dashboard Cite

show abstract

“…For this experiment all solutions were purged with synthetic air for 1h,p rior to each chronoamperometric measurement. [13] Nonetheless, the available photocurrent is stilla lmost3times higher in the presence of organicp ollution compared to pure PEC water splitting. Fortunately,t he trend of increasing photocurrentd ensity with increasing methanolc ontent is well retained.…”

Section: Aqueousphase Experimentsmentioning

confidence: 99%

Harvesting Hydrogen Gas from Air Pollutants with an Unbiased Gas Phase Photoelectrochemical Cell

et al. 2017

View full text Add to dashboard Cite

The concept of an all-gas-phase photoelectrochemical (PEC) cell producing hydrogen gas from volatile organic contaminated gas and light is presented. Without applying any external bias, organic contaminants are degraded and hydrogen gas is produced in separate electrode compartments. The system works most efficiently with organic pollutants in inert carrier gas. In the presence of oxygen, the cell performs less efficiently but still significant photocurrents are generated, showing the cell can be run on organic contaminated air. The purpose of this study is to demonstrate new application opportunities of PEC technology and to encourage further advancement toward PEC remediation of air pollution with the attractive feature of simultaneous energy recovery and pollution abatement.

show abstract

“…This has initiated numerous researches on size and shapecontrolled TiO 2 nanocrystals [17][18][19][20][21][22][23][24][25][26][27] and nanostructures [28][29][30][31][32][33][34]. However, the exact evaluation of photocatalytic activity of the oxide particles is often hampered by the complex interplay among various physicochemical processes imposed by the heterogeneous reaction condition at the liquid-solid interface coupled with photoexcitation and relaxation dynamics [13,35].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Evaluation on Photocatalytic Activity of Anatase TiO₂Nanocrystals in Aqueous Solution

Jeon¹,

Kim

2015

Applied Science and Convergence Technology

View full text Add to dashboard Cite

Quantitative evaluation of photocatalytic activity of oxide nanoparticles in aqueous solution is quite challenging in that the kinetic reaction rate is determined by a complicated interplay among various limiting factors such as light scattering and absorption, diffusion and adsorption of reactants in condensed liquid phase, photoexcited charge separation and recombination rate, and the exact nature of active sites determined by detailed morphology and crystallinity of nanocrystals. Here, we present our simple experimental results showing that the kinetic regime of a typical photocatalytic degradation experiment over UV-irradiated TiO 2 nanoparticles in aqueous solution is in that dominated by the photoactivity of TiO 2 and its concentration.This result lays a firm ground of using the measured kinetic reaction rate in evaluating photocatalytic efficiency of oxide nanocrystals under evaluation.

show abstract

Role of One-Dimensional Ribbonlike Nanostructures in Dye-Sensitized TiO₂-Based Solar Cells

Cited by 38 publications

References 79 publications

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

Harvesting Hydrogen Gas from Air Pollutants with an Unbiased Gas Phase Photoelectrochemical Cell

Quantitative Evaluation on Photocatalytic Activity of Anatase TiO₂Nanocrystals in Aqueous Solution

Contact Info

Product

Resources

About

Role of One-Dimensional Ribbonlike Nanostructures in Dye-Sensitized TiO2-Based Solar Cells

Cited by 38 publications

References 79 publications

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

Diffusion–Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination

Harvesting Hydrogen Gas from Air Pollutants with an Unbiased Gas Phase Photoelectrochemical Cell

Quantitative Evaluation on Photocatalytic Activity of Anatase TiO2Nanocrystals in Aqueous Solution

Contact Info

Product

Resources

About

Role of One-Dimensional Ribbonlike Nanostructures in Dye-Sensitized TiO₂-Based Solar Cells

Quantitative Evaluation on Photocatalytic Activity of Anatase TiO₂Nanocrystals in Aqueous Solution