Structural, optical and electrical impacts of marcasite in pyrite thin films

Moon, Dae‐Gyu; Rehan, Shanza; Lim, Soo Yeon; Nam, Dahyun; Seo, Ilwan; Gwak, Jihye; Cheong, Hyeonsik; Cho, Yong Soo; Lee, Yunsang; Ahn, Se Jin

doi:10.1016/j.solener.2017.11.026

Cited by 24 publications

(23 citation statements)

References 43 publications

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“…The band gap of the film was calculated by a Tauc plot according to the (αhυ) 1/2 v.s. hυ relation [13]. A sharp absorption edge at around 950 nm was observed, corresponding to a band gap of 0.89 eV, as shown in Figure 8b.…”

Section: Resultsmentioning

confidence: 75%

“…However, its development and application have been restricted for decades [5], owing to sulfur vacancies [6], undesired doping [7], surface conduction [8], and so on. So far, the record power conversion efficiency (PCE) of FeS 2 -based solar cells is 2.8% [9][10][11][12][13][14][15]. Therefore, extensive investigation on FeS 2 is still needed, including material synthesis, defect properties, and device physics.…”

Section: Introductionmentioning

confidence: 99%

“…These merits make it suitable for production on an industrial scale. Sulfurization is proven to be not only crucial to synthesize pure semiconductors, such as CZTS and In 2 S 3 [20][21][22], but also be essential for improving the crystallinity of spin-coated or sputtered iron pyrite films [7,13]. However, sulfurization has not been utilized as a post-treatment in the synthesis of FeS 2 film with thiourea based on ECD [23].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Iron Pyrite Thin Films and Photovoltaic Devices by Sulfurization in Electrodeposition Method

Lü

Zhou

et al. 2021

Nanomaterials

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Iron pyrite is a cheap, stable, non-toxic, and earth-abundant material that has great potential in the field of photovoltaics. Electrochemical deposition is a low-cost method, which is also suitable for large-scale preparation of iron pyrite solar cells. In this work, we prepared iron pyrite films by electrochemical deposition with thiourea and explored the effect of sulfurization on the synthesis of high-quality iron pyrite films. Upon sulfurization, the amorphous precursor film becomes crystallized iron pyrite film. Optical and electrical characterization show that its band gap is 0.89 eV, and it is an n type semiconductor with a carrier concentration of 3.01 × 1019 cm−3. The corresponding photovoltaic device shows light response. This work suggests that sulfurization is essential in the electrochemical preparation for fabricating pure iron pyrite films, and therefore for low-cost and large-scale production of iron pyrite solar cells.

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Section: Resultsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication of Iron Pyrite Thin Films and Photovoltaic Devices by Sulfurization in Electrodeposition Method

Lü

Zhou

et al. 2021

Nanomaterials

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“…Marcasite (the second iron disulfide) forms pale bronze-yellow crystals. Marcasite is found with lead and zinc minerals in metalliferous veins [12,13]. Marcasite and pyrite have the same chemical composition, but different structures.…”

Section: Marcasitementioning

confidence: 99%

Iron Sulfide Phases: A Brief Review

Carstea

Chiriţă

2021

AUC Chem

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This short review collects information seen as important for understanding the behavior of iron sulfides. One presents data about the structure, physical and chemical properties of iron sulfides, the mechanism of their oxidation, their uses and their environmental implications. The iron sulfides are classified as iron monosulfides (pyrrhotite, troilite and mackinawite) and iron disulfides (pyrite and marcasite).

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“…This low performance could be attributed to high density of surface defects. In addition, a low open-circuit voltage of around 0.2 mV, could be attributed to the presence of phase impurities (Moon et al, 2018). Orthorhombic marcasite FeS2 and hexagonal troilite FeS are common iron sulfur phases, which may form as impurities.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Deposition Time and Sulfurization Temperature on The Optical and Structural Properties of Iron Sulfide Thin Films Deposited from Acidic Chemical Baths

Paal

Nkrumah

Ampong

et al. 2020

SJUOZ

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Pyrite phase FeS2 thin films have been grown by a two-stage process of chemical bath deposition followed by sulfurization. Thiourea and thioacetamide were used as sulfur precursors in separate baths. The deposition time was controlled for 1, 2, and 3 hours respectively. The as-deposited films were sulfurized at temperatures of 250 oC and 500 oC to form the pyrite phase. The effect of deposition time and sulfurization temperature on the structure, morphology and optical properties of the iron pyrite films obtained from the two separate baths were studied and compared. X-ray diffraction analyses established the formation of the pyrite phase in all the films after sulfurization, in addition to iron (II) oxide hydrate as impurities. All films showed further improvement in pyrite formation, crystallinity as well as an increase in crystallite size after sulfurizing at 500 oC. EDAX and SEM microscopy showed that the iron pyrite films produced from the bath containing thiourea, had better crystallinity and a higher iron content. The optical band gap of the iron pyrite films obtained with thiourea, was 2.1, 1.9 and 1.6 eV for the various deposition times. With thioacetamide, the band gap was 1.4 eV, for the deposition time of 3 hours.

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Structural, optical and electrical impacts of marcasite in pyrite thin films

Cited by 24 publications

References 43 publications

Fabrication of Iron Pyrite Thin Films and Photovoltaic Devices by Sulfurization in Electrodeposition Method

Fabrication of Iron Pyrite Thin Films and Photovoltaic Devices by Sulfurization in Electrodeposition Method

Iron Sulfide Phases: A Brief Review

The Effect of Deposition Time and Sulfurization Temperature on The Optical and Structural Properties of Iron Sulfide Thin Films Deposited from Acidic Chemical Baths

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