Influence of elevated radiative lifetime on efficiency of CdSe/CdTe Type II colloidal quantum dot based solar cells

Leontiadou, Marina A.; Tyrrell, Edward J.; Smith, Carole; Espinobarro-Velázquez, Daniel; Page, Robert; O’Brien, Paul; Miloszewski, Jacek M.; Walsh, Thomas; Binks, David J.; Tomić, Stanko

doi:10.1016/j.solmat.2016.01.018

Cited by 30 publications

(12 citation statements)

References 55 publications

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“…If we look at the bottom panel of Fig. 5, although the maximum efficiency values are relatively in a good agreement with the literature [11,12,17], we see completely different behaviors in efficiency values with respect to the E g when compared to bottom panel of Fig. 3.…”

Section: Resultssupporting

confidence: 86%

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Şahin

2018

J. Phys.: Condens. Matter

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In this study, the effects of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal (QDNC) solar cells have been investigated in detail. For this purpose, the conventional, i.e. original, detailed balance model, developed by Shockley and Queisser to calculate an upper limit for the conversion efficiency of silicon p-n junction solar cells, is modified in a simple and effective way to calculate the conversion efficiency of core/shell QDNC solar cells. Since the existing model relies on the gap energy ([Formula: see text]) of the solar cell, it does not make an estimation about the effect of QDNC materials on the efficiency of the solar cells, and gives the same efficiency values for several QDNC solar cells with the same [Formula: see text]. The proposed modification, however, estimates a conversion efficiency in relation to the material properties and also the confinement type of the QDNCs. The results of the modified model show that, in contrast to the original one, the conversion efficiencies of different QDNC solar cells, even if they have the same [Formula: see text], become different depending upon the confinement type and shell material of the core/shell QDNCs, and this is crucial in the design and fabrication of the new generation solar cells to predict the confinement type and also appropriate QDNC materials for better efficiency.

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Section: Resultssupporting

confidence: 86%

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Şahin

2018

J. Phys.: Condens. Matter

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“…Colloidal type-II CdSe/CdTe QDs, offer extra degree of freedom in designing MEG devices [137,138]. Previous calculations of BXX in type-II CdSe/CdTe QDs, have found a large repulsion between excitons, while experiment suggests the opposite, i.e., stronger attraction between excitons in the biexciton.…”

Section: Multi Exciton Generation Solar Cellsmentioning

confidence: 99%

Multiscale in modelling and validation for solar photovoltaics

et al. 2018

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Photovoltaics is amongst the most important technologies for renewable energy sources, and plays a key role in the development of a society with a smaller environmental footprint. Key parameters for solar cells are their energy conversion efficiency, their operating lifetime, and the cost of the energy obtained from a photovoltaic system compared to other sources. The optimization of these aspects involves the exploitation of new materials and development of novel solar cell concepts and designs. Both theoretical modeling and characterization of such devices require a comprehensive view including all scales from the atomic to the macroscopic and industrial scale. The different length scales of the electronic and optical degrees of freedoms specifically lead to an intrinsic need for multiscale simulation, which is accentuated in many advanced photovoltaics concepts including nanostructured regions. Therefore, multiscale modeling has found particular interest in the photovoltaics community, as a tool to advance the field beyond its current limits. In this article, we review the field of multiscale techniques applied to photovoltaics, and we discuss opportunities and remaining challenges.

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“…1,[13][14][15][16] Among these assortments, a gied advantage of the type II QDs is that the band gap offset in them spatially separates photogenerated carriers within the structure such that the electronwave function resides largely in one material and the holewave function in the other. 6,[17][18][19][20] The energy offset can be tuned by a judicious control of the composition, size and shape of each component which offers the possibility of directly controlling the electron-hole wave function overlap, tailoring the optoelectronic properties of the devices based on them. 21 The staggered alignment of band edges helps in improving the power conversion efficiency of photovoltaic cells by preventing the back electron transfer.…”

Section: Introductionmentioning

confidence: 99%

Photoinduced electron transfer in novel CdSe–Cu₂Se type II core–shell quantum dots

2019

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Influence of elevated radiative lifetime on efficiency of CdSe/CdTe Type II colloidal quantum dot based solar cells

Cited by 30 publications

References 55 publications

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Multiscale in modelling and validation for solar photovoltaics

Photoinduced electron transfer in novel CdSe–Cu₂Se type II core–shell quantum dots

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Influence of elevated radiative lifetime on efficiency of CdSe/CdTe Type II colloidal quantum dot based solar cells

Cited by 30 publications

References 55 publications

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Effect of the shell material and confinement type on the conversion efficiency of core/shell quantum dot nanocrystal solar cells

Multiscale in modelling and validation for solar photovoltaics

Photoinduced electron transfer in novel CdSe–Cu2Se type II core–shell quantum dots

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Photoinduced electron transfer in novel CdSe–Cu₂Se type II core–shell quantum dots