Tuning iron pyrite thin film microstructure by sulfurization of columnar iron precursors

LaForge, Joshua M.; Gyenes, Balázs; Xu, Shihan; Haynes, Landon K.; Titova, Lyubov V.; Hegmann, Frank A.; Brett, Michael

doi:10.1016/j.solmat.2013.06.028

Cited by 10 publications

(5 citation statements)

References 76 publications

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“…The indirect band gap of films estimated to be 0.98 ± 0.04 eV having resistivity of 2.2 Ω cm and carrier mobility on the order of 0.1 cm 2 V −1 s −1 with majority carrier concentrations in the range of 10 18 cm −3 to 10 19 cm −3 . The lifetime of photo‐carriers was measured as 27 ps with ultrafast optical‐pump/THz‐probe as high efficiency devices require longer carrier life time …”

Section: Pyrite Thin Films For Photovoltaicsmentioning

confidence: 99%

Nanocrystalline Pyrite for Photovoltaic Applications

et al. 2018

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Transition metal sulfides (TMSs) are of special interest in energy conversion and storage devices. Amongst all sulfides, fool's gold or iron pyrite (FeS 2 ) is potentially an attractive candidate for photovoltaic applications. Iron pyrite has risen to prominence due to its distinct properties and abundance in nature to meet the large scale needs. It is considered as environmentally benign solar absorber material with high absorption coefficient, α > 6 x10 5 cm À 1 for λ � 700 nm and suitable energy bandgap (E g = 0.95 eV). Numerous physical and chemical methods have been employed to deposit nanocrystalline pyrite thin films directly from source materials or indirectly by sulfuration. This review gives an overview of pyrite as a low cost photovoltaic absorber material for contemporary solar cell structures. In addition, practical approaches like the rational design of nanocomposites, band gap engineering and nanostructure synthesis of pyrite for improving its properties particularly photovoltaic properties are also deliberated. Moreover, limitations, challenges, remedies and prospects of pyrite as potential photovoltaic material are also reviewed to further advance the development of pyrite-based solar cell configurations.[a] Dr.at a low precursor concentration, pyrite nanocubes (125-250 nm in 20-180 min) were obtained due to low nuclei concentration and slow growth (diffusion limited) in quasiequilibrium. The anisotropic structures nanodendrites were 2 3 4 5 6 7 8

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Section: Pyrite Thin Films For Photovoltaicsmentioning

confidence: 99%

Nanocrystalline Pyrite for Photovoltaic Applications

et al. 2018

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“…The synthesis of iron pyrite by thermal sulphidation has been popular since the 1980s, which was used for preparing iron pyrite for the manufacturing of solar devices. Many types of precursor materials have been employed in the reported studies, including iron lms, [91][92][93][94][95][96][97][98][99] iron oxide lms, 100-105 iron sulphide lms 106,107 and other typical chemicals. 1,[108][109][110][111][112][113][114][115][116][117] The terminal morphology of iron pyrite is determined by the precursor materials.…”

Section: Sulphidation Synthesis Of Iron Pyrite With Different Morpholmentioning

confidence: 99%

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Huang

Zhu

2016

RSC Adv.

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Synthesis of iron pyrite with defined morphology has long been actively pursued, due to the strong size and shape dependence of their chemical and physical properties. This review provides comprehensive information outlining current knowledge regarding the morphology controllable syntheses of micro-and nano-iron pyrite mono-and poly-crystals. The wet-chemical methods are summarized as the controllable syntheses, including the hydrothermal, solvothermal, hot-injection and heating-up methods, sulphidation and methods with other relatively high efficiencies. The present study reveals the discussion of relationship between the morphologies and major controlling factors, the temperature, precursor chemicals, solvents and surfactants. The existing challenges for future fine tuning of iron pyrite facets are also proposed for improving the performance of iron pyrite based materials.

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“…2) Recently, various studies revealed that the existence of a surface inversion layer on the iron pyrite surface and the high density of deep donor defect states in bulk iron pyrite are related to low V OC . [5][6][7] On the other hand, pyrite nanostructures 8,9) and nano- [10][11][12] and polycrystalline thin films [13][14][15][16] show p-type conduction. In these studies, FeS 2 thin-film solar cells were fabricated.…”

Section: Introductionmentioning

confidence: 99%

Effect of inversion layer at iron pyrite surface on photovoltaic device

Uchiyama¹,

Ishikawa²,

Uraoka³

2018

Jpn. J. Appl. Phys.

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Iron pyrite has great potential as a thin-film solar cell material because it has high optical absorption, low cost, and is earth-abundant. However, previously reported iron pyrite solar cells showed poor photovoltaic characteristics. Here, we have numerically simulated its photovoltaic characteristics and band structures by utilizing a two-dimensional (2D) device simulator, ATLAS, to evaluate the effects of an inversion layer at the surface and a high density of deep donor defect states in the bulk. We found that previous device structures did not consider the inversion layer at the surface region of iron pyrite, which made it difficult to obtain the conversion efficiency. Therefore, we remodeled the device structure and suggested that removing the inversion layer and reducing the density of deep donor defect states would lead to a high conversion efficiency of iron pyrite solar cells.

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Tuning iron pyrite thin film microstructure by sulfurization of columnar iron precursors

Cited by 10 publications

References 76 publications

Nanocrystalline Pyrite for Photovoltaic Applications

Nanocrystalline Pyrite for Photovoltaic Applications

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

Effect of inversion layer at iron pyrite surface on photovoltaic device

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