High-Efficiency Dye-Sensitized Solar Cell with Three-Dimensional Photoanode

Tétreault, Nicolas; Arsenault, Eric A.; Heiniger, Leo-Philipp; Soheilnia, Navid; Brillet, Jérémie; Moehl, Thomas; Zakeeruddin, Shaik M.; Ozin, Geoffrey A.; Grätzel, Michaël

doi:10.1021/nl201792r

Cited by 146 publications

(146 citation statements)

References 47 publications

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“…Additional functional properties can be introduced to the inverse opal matrix by various surface modification techniques. The interconnected porosity enables the entire surface to be modified uniformly, for example using atomic layer deposition (ALD) [65][66][67][68][69][70][71][72] or electrodeposition 26,[73][74][75][76] techniques. The matrix material can also be conveniently chosen to allow for simple and reliable introduction of a rich variety of surface functionalities at a molecular level, for example via silane chemistry.…”

Section: Control Over Structural Features In Colloidal Assembliesmentioning

confidence: 99%

“…393 There is a clear efficiency enhancement for the structure made with 200 nm colloids, which has a photonic bandgap overlapping with the electronic absorption of WO 3 . In addition to ordered structures for increased absorption of certain wavelengths, disordered structures can be used to increase scattering of all wavelengths, 71 which also improves absorption by increasing the path length in the structure. Patterning and hierarchical structures.…”

Section: Factors Influencing Electrode Applicationsmentioning

confidence: 99%

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A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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Nature evolved a variety of hierarchical structures that produce sophisticated functions. Inspired by these natural materials, colloidal self-assembly provides a convenient way to produce structures from simple building blocks with a variety of complex functions beyond those found in nature. In particular, colloid-based porous materials (CBPM) can be made from a wide variety of materials. The internal structure of CBPM also has several key attributes, namely porosity on a sub-micrometer length scale, interconnectivity of these pores, and a controllable degree of order. The combination of structure and composition allow CBPM to attain properties important for modern applications such as photonic inks, colorimetric sensors, self-cleaning surfaces, water purification systems, or batteries. This review summarizes recent developments in the field of CBPM, including principles for their design, fabrication, and applications, with a particular focus on structural features and materials' properties that enable these applications. We begin with a short introduction to the wide variety of patterns that can be generated by colloidal self-assembly and templating processes. We then discuss different applications of such structures, focusing on optics, wetting, sensing, catalysis, and electrodes. Different fields of applications require different properties, yet the modularity of the assembly process of CBPM provides a high degree of tunability and tailorability in composition and structure. We examine the significance of properties such as structure, composition, and degree of order on the materials' functions and use, as well as trends in and future directions for the development of CBPM.

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Section: Control Over Structural Features In Colloidal Assembliesmentioning

confidence: 99%

Section: Factors Influencing Electrode Applicationsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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“…Applications for photonic crystals include all-optical microchips for optical information processing, optical communication networks, sensors, and solar energy harvesting. [7][8][9][10][11][12] In our investigation, we consider a nonlinear photonic crystal, which has a refractive index distribution that can be tuned optically. The nonlinear photonic crystal surrounds the hybrid system and is used to manipulate the interaction between the quantum emitter and graphene nanodisk.…”

Section: Introductionmentioning

confidence: 99%

Dipole-dipole interaction between a quantum dot and a graphene nanodisk

et al. 2012

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We study theoretically the dipole-dipole interaction and energy transfer in a hybrid system consisting of a quantum dot and graphene nanodisk embedded in a nonlinear photonic crystal. In our model, a probe laser field is applied to measure the energy transfer between the quantum dot and graphene nanodisk, while a control field manipulates the energy transfer process. These fields create excitons in the quantum dot and surface plasmon polaritons in the graphene nanodisk which interact via the dipole-dipole interaction. Here, the nonlinear photonic crystal acts as a tunable photonic reservoir for the quantum dot, and is used to control the energy transfer. We have found that the spectrum of power absorption in the quantum dot has two peaks due to the creation of two dressed excitons in the presence of the dipole-dipole interaction. The energy transfer rate spectrum of the graphene nanodisk also has two peaks due to the absorption of these two dressed excitons. Additionally, energy transfer between the quantum dot and the graphene nanodisk can be switched on and off by applying a pump laser to the photonic crystal or by adjusting the strength of the dipole-dipole interaction. We show that the intensity and frequencies of the peaks in the energy transfer rate spectra can be modified by changing the number of graphene monolayers in the nanodisk or the separation between the quantum dot and graphene. Our results agree with existing experiments on a qualitative basis. The principle of our system can be employed to fabricate nanobiosensors, optical nanoswitches, and energy transfer devices.

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“…Reproduced by permission of The Royal Society of Chemistry significantly improved photocurrent, fill factor, and most importantly the photovoltage of the device. [114,[138][139][140]. DSSCs employing novel porphyrin sensitizers with cobalt (II/III)-based redox electrolyte exhibit high PCE [12 % as shown in Table 2 [141].…”

Section: Dye-sensitized Solar Cells (Dsscs)mentioning

confidence: 99%

“…14 Schematic illustration of the fabrication method for a 3D host-passivation-guest dyesensitized solar cell. Reprinted (adapted) with permission from ref [140]. Copyright (2011) American Chemical Society When the photons have higher energies greater than the band gap of the photocatalyst material, the electrons from the valence band (VB) are excited to the conduction band (CB) forming an electron-hole pair.…”

Section: Basic Concept Of Photocatalysismentioning

confidence: 99%

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

Elumalai

Chellappan

Jose

et al. 2015

Mater Renew Sustain Energy

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The present review rationalizes the significance of the metal oxide semiconductor (MOS) interfaces in the field of photovoltaics and photocatalysis. This perspective considers the role of interface science in energy harvesting using organic photovoltaics (OPVs) and dye-sensitized solar cells (DSSCs). These interfaces include large surface area junctions between photoelectrodes and dyes, the interlayer grain boundaries within the photoanodes, and the interfaces between photoactive layers and the top and bottom contacts. Controlling the collection and minimizing the trapping of charge carriers at these boundaries is crucial to overall power conversion efficiency of solar cells. Similarly, MOS photocatalysts exhibit strong variations in their photocatalytic activities as a function of band structure and surface states. Here, the MOS interface plays a vital role in the generation of OH radicals, which forms the basis of the photocatalytic processes. The physical chemistry and materials science of these MOS interfaces and their influence on device performance are also discussed.

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High-Efficiency Dye-Sensitized Solar Cell with Three-Dimensional Photoanode

Cited by 146 publications

References 47 publications

A colloidoscope of colloid-based porous materials and their uses

A colloidoscope of colloid-based porous materials and their uses

Dipole-dipole interaction between a quantum dot and a graphene nanodisk

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

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