Quantum dot sensitizers

Plass R, Pelet S, Krueger J, Gratzel M, Bach U (2002) Quantum dot sensitization of organic-inorganic hybrid solar cells. J Phys Chem B 106 7578-7580... 

Recombination in Quantum Dot Sensitized Solar Cells. Acc. Chem. Res. 2009,42 1848-1857. 

Chen, J. Lei, W. Zhang, X. B., Enhanced electron transfer rate for quantum dot sensitized solar cell based on CNT-Ti02 film./. Nanoscience andNanotechn. 2012,12 6476-6479. 

In this work, we present a brief introduction to the nonequilibrium Green s function method and discuss two important examples in which nonequli-brium Green s functions can be employed (1) electric current calculations in molecular tunneling devices and (2) in quantum dot-sensitized solar cells. 

Our interest in quantum dot-sensitized solar cells (QDSSC) is motivated by recent experiments in the Parkinson group (UW), where a two-electron transfer from excitonic states of a QD to a semiconductor was observed [32]. The main goal of this section is to understand a fundamental mechanism of electron transfer in solar cells. An electron transfer scheme in a QDSSC is illustrated in Figure 5.22. As discussed in introduction, quantum correlations play a crucial role in electron transfer. Thus, we briefly describe the theory [99] in which different correlation mechanisms such as e-ph and e-e interactions in a QD and e-ph interactions in a SM are considered. A time-dependent electric field of an arbitrary shape interacting with QD electrons is described in a dipole approximation. The interaction between a SM and a QD is presented in terms of the tunneling Hamiltonian, that is, in... 

Yu. Dahnovsky, Quantum correlated electron dynamics in a quantum-dot sensitized solar cell The Keldysh function approach, Phys. Rev. B (2011) (accepted). 

Tachibana Y., Akiyama H. Y., Ohtsuka Y., Torimoto T. and Kuwabata S. (2007), CdS quantum dots sensitized Ti02 sandwich type photoelectrochemical solar cells , Chem. Lett. 36, 88-89. 

Fig. (23). Schematic representation of quantum dot sensitized upconversion of IR to Visible light via triplet-triplet annihilation. Reproduced with permission from [224] 2015 Macmillan Publishers Limited.

Fig. 19 Schematic depictions of (a) the preparation of a cobalt pyrite (C0S2) film electrode via the thermal sulfidation of a 100 nm thick cobalt film deposited over a titanium adhesion layer on a roughened borosilicate glass substrate by electron-beam evaporation and (b) the incorporation of an as-synthesized C0S2 film on glass into a CdS/ CdSe-sensitized thin-layer liquid-junction quantum dot-sensitized solar cell (QDSSC) filled with sulfide/polysulfide electrolyte to demonstrate the high QDSSC performance enabled by the C0S2 counter electrode. Reproduced from ref. 167 with permission from the American Chemical Society.

Use the same strategy, J. Zhang aslo reported that the stable hydrogen generation could be applied by using CdS quantum dot sensitized vermiculite (CdS/VMT) photocatalytic splitting of water under visible-light irradiation. ... 

Figure 10.2 Principle of operation of liquid junction dye or quantum dot sensitized solar cell using mesoscopic Ti02 films.

Photography, Silver Halides Quantum Dot Sensitization Semiconductor Electrode... 

Chang CH, Lee YL (2007) Chemical bath deposition of CdS quantum dots onto mesoscopic Ti02 films for application in quantum-dot-sensitized solar cells. Appl Phys Lett 91 053503-1-053503-3... 

Diguna LJ, Shen Q, Kobayashi J, Toyoda T (2007) High efficiency of CdSe quantum-dot-sensitized Ti02 inverse opal solar cells. Appl Phys Lett 91 023116-1-023116-3... 

Quantum Dot Sensitization, Fig. 1 SEM images of inverse opal (lO) Ti02 electrode (left) and that adsorbed with CdSe quantum dots (right)... 

Ruble S, Shalom M, Zaban A (2010) Quantum-dot-sensitized solar cells. Chem Phys Chem 11 2290-2304... 

Gonzalez-Pedro V, Xu X, Mora-Ser6 I, Bisquert J (2010) Modeling high-efficiency quantum dot sensitized solar cells. ACS Nano 10 5783-5790... 

Snaith HJ, Stavrinadis A, Docampo P, Watt AAR (2011) Lead-sulphide quantum-dot sensitization of tin oxide based hybrid solar cells. 8olar Energy 85 1283-1290... 

Lee H, Leventis HC, Moon 8-J, Chen P, Ito 8, Haque SA, Torres T, Niiesch F, Geiger T, Zakeeruddin 8M et al (2009) Pb8 and Cd8 quantum dot-sensitized solid-state solar cells old concepts, new results . Adv Funct Mater 19 2735-2742... 

Mali SS, Desai SK, Kalagi SS et al (2012) PbS quanmm dot sensitized anatase Ti02 nanocorals for quantum dot-sensitized solar cell applications. Dalton Trans 41 6130-6136... 

Mora-Soo I, Gimenez S, Fabregat-Santiago F, Granez R, Shen Q, Toyoda T, Bisquert J (2009) Recombination in quantum dot sensitized solar cells. Acc Chem Res 42 1848-1857... 

Lee, W, Kang, S.H., Kim, XY, Kolekar, G.B., Sung, YE. Han, S.H. Ti02 nanotubes with a ZnO thin energy barrier for improved current efficiency of CdSe quantum-dot-sensitized solar cells. Nanotechnology 20 33 (2009a), 335706. 

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