Industrially scalable and cost-effective Mn2+ doped ZnxCd1−xS/ZnS nanocrystals with 70% photoluminescence quantum yield, as efficient down-shifting materials in photovoltaics

Levchuk, Ievgen; Würth, Christian; Krause, Florian; Osvet, Andres; Batentschuk, Miroslaw; Resch‐Genger, Ute; Kolbeck, Claudia; Herre, Patrick; Steinrück, Hans‐Peter; Peukert, Wolfgang; Brabec, Christoph J.

doi:10.1039/c5ee03165f

Cited by 68 publications

(63 citation statements)

References 57 publications

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“…[99,112] [112] The same group reported an air-exposed, one-pot, microwave synthesis of CuInS 2 /ZnS QDs, which showed high absorption at λ <400 nm, high Φ PL of 56% and emission in the red/NIR region. [99] Upon [93] The QDs showed Φ PL of up to 70% and the synthesis gave consistent results when scaled up to 40…”

Section: Silicon Photovoltaic Cellsmentioning

confidence: 64%

“…[4] The LDS efficiency is quantified by relative changes in the EQE and IV curves measured before and after coating. [92][93][94] This allows for more consistency between the characterization protocols used for LDS than LSCs. The EQE, in particular, measures the λ-dependent response of a PV cell and thus enables the role of the LDS layer to be quantified directly.…”

Section: Working Principle and Figures-of-meritmentioning

confidence: 99%

“…[105] Typical host materials include polymers, [106][107][108][109] silica hybrids [110][111][112] or glasses, [103,104,113] although there are also numerous examples of luminophores coated directly onto the device surface. [93,114] If a host material is used, its thickness must be optimized to minimize edge emission. [4,115] Recent research has focused on the optimization of host-luminophore combinations, with the aims of improving the stability, efficiency and ease of device fabrication.…”

Section: Working Principle and Figures-of-meritmentioning

confidence: 99%

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Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

2017

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Single-junction photovoltaic devices exhibit a bottleneck in their efficiency due to incomplete or inefficient harvesting of photons in the low- or high-energy regions of the solar spectrum. Spectral converters can be used to convert solar photons into energies that are more effectively captured by the photovoltaic device through a photoluminescence process. Here, recent advances in the fields of luminescent solar concentration, luminescent downshifting, and upconversion are discussed. The focus is specifically on the role that materials science has to play in overcoming barriers in the optical performance in all spectral converters and on their successful integration with both established (e.g., c-Si, GaAs) and emerging (perovskite, organic, dye-sensitized) cell types. Current challenges and emerging research directions, which need to be addressed for the development of next-generation luminescent solar devices, are also discussed.

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Section: Silicon Photovoltaic Cellsmentioning

confidence: 64%

Section: Working Principle and Figures-of-meritmentioning

confidence: 99%

Section: Working Principle and Figures-of-meritmentioning

confidence: 99%

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Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

2017

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“…Another way to improve the properties of QDs is by doping some ions, such as Mn 2+ and Cu 2+ , in the core/shell QDs configurations. The doped ions are proven to further improve the optical and electrical properties of the core/shell QDs; which render them useful for various applications [7][8][9]. Tuning the size of the QDs can help control the absorption and emission spectrum in the desired direction [3,[10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Review of Core/Shell Quantum Dots Technology Integrated into Building’s Glazing

2019

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Skylights and windows are building openings that enhance human comfort and well-being in various ways. Recently, a massive drive is witnessed to replace traditional openings with building integrated photovoltaic (BIPV) systems to generate power in a bid to reduce buildings’ energy. The problem with most of the BIPV glazing lies in the obstruction of occupants’ vision of the outdoor view. In order to resolve this problem, new technology has emerged that utilizes quantum dots semiconductors (QDs) in glazing systems. QDs can absorb and re-emit the incoming radiation in the desired direction with the tunable spectrum, which renders them favorable for building integration. By redirecting the radiation towards edges of the glazing, they can be categorized as luminescent solar concentrators (QD-LSCs) that can help to generate electricity while maintaining transparency in the glazing. The aim of this paper is to review the different properties of core/shell quantum dots and their potential applications in buildings. Literature from various disciplines was reviewed to establish correlations between the optical and electrical properties of different types, sizes, thicknesses, and concentration ratios of QDs when used in transparent glazing. The current article will help building designers and system integrators assess the merits of integrating QDs on windows/skylights with regards to energy production and potential impact on admitted daylighting and visual comfort.

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“…A large number of luminescent materials have been investigated for LDS, which can be separated into three main categories [18] : quantum dots (QDs) [19][20][21][22] , organic dyes [23][24][25] and rare earth ions/complexes [26,27] . However, there are few materials that only absorb UV light and convert it into visible light.…”

Section: Introductionmentioning

confidence: 99%

ZnSe quantum dots downshifting layer for perovskite solar cells

Wang

Shen

et al. 2018

Journal of Energy Chemistry

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a b s t r a c tTo date, the instability of organometal halide perovskite solar cells (PSCs) has become the focus issue that limits the development and long-term application of PSCs. Both the ultraviolet (UV) rays in sunlight and moisture in air can significantly accelerate the disintegration of the perovskite. Here, we introduced a ZnSe quantum dots layer as downshifting materials, which was spin-coated onto the backside of PSCs. This layer converted the UV rays into visible light to prevent the destruction of PSCs as well as increase the light harvesting of the perovskite layer. Under the UV irradiation in the moisture ambient (40%), the destruction speed of the unencapsulated perovskite films were also delayed evidently. In addition, the power conversion efficiency (PCE) of the PSCs was increased from 16.6% to 17.3% due to the increase of the visible light absorbance of the perovskite.

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Industrially scalable and cost-effective Mn²⁺ doped Zn_xCd_1−xS/ZnS nanocrystals with 70% photoluminescence quantum yield, as efficient down-shifting materials in photovoltaics

Abstract: We present colloidally stable and highly luminescent ZnxCd1–xS:Mn/ZnS core–shell nanocrystals (NCs) as cost-effective light converters for silicon photovoltaic (PV).

Cited by 68 publications

References 57 publications

Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

Towards Efficient Spectral Converters through Materials Design for Luminescent Solar Devices

Review of Core/Shell Quantum Dots Technology Integrated into Building’s Glazing

ZnSe quantum dots downshifting layer for perovskite solar cells

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