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Nanomaterials made of earth-abundant...

Molk, Doreen.

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Nanomaterials made of earth-abundant elements for photovoltaics.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Nanomaterials made of earth-abundant elements for photovoltaics./
作者:	Molk, Doreen.
面頁冊數:	65 p.
附註:	Source: Masters Abstracts International, Volume: 51-04.
Contained By:	Masters Abstracts International51-04(E).
標題:	Chemistry, Inorganic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1532548
ISBN:	9781267881236

Nanomaterials made of earth-abundant elements for photovoltaics.
Molk, Doreen.

Nanomaterials made of earth-abundant elements for photovoltaics. - 65 p.

Source: Masters Abstracts International, Volume: 51-04.

Thesis (M.Chem.)--Colorado School of Mines, 2013.

Of the many types of solar cells currently under exploration, multijunction photovoltaics (MJPVs) are of the most interest due to their record-breaking solar energy conversion efficiencies (over 40%). However, MJPV device fabrication is expensive because they require a costly synthesis technique that utilizes rare elements such as gallium, arsenic, and indium. To resolve this issue, our efforts have been focused on the replacement of the thin-film materials currently employed in MJPVs with a more earth-abundant alternative, Zn-alloyed iron pyrite (ZnxFe(1-x)S2). The synthesis of ZnxFe(1-x)S2 nanoparticles is of particular interest because a nanoparticle 'ink' can be inserted into a roll-to-roll processor, which is an inexpensive technique of creating defect-free thin-films for electronics.

ISBN: 9781267881236Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Nanomaterials made of earth-abundant elements for photovoltaics.
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245 1 0 $a Nanomaterials made of earth-abundant elements for photovoltaics.
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500 $a Adviser: Yongan Yang.
502 $a Thesis (M.Chem.)--Colorado School of Mines, 2013.
520 $a Of the many types of solar cells currently under exploration, multijunction photovoltaics (MJPVs) are of the most interest due to their record-breaking solar energy conversion efficiencies (over 40%). However, MJPV device fabrication is expensive because they require a costly synthesis technique that utilizes rare elements such as gallium, arsenic, and indium. To resolve this issue, our efforts have been focused on the replacement of the thin-film materials currently employed in MJPVs with a more earth-abundant alternative, Zn-alloyed iron pyrite (ZnxFe(1-x)S2). The synthesis of ZnxFe(1-x)S2 nanoparticles is of particular interest because a nanoparticle 'ink' can be inserted into a roll-to-roll processor, which is an inexpensive technique of creating defect-free thin-films for electronics.
520 $a The first part of this work explores the synthesis of Zn-alloyed iron pyrite nanoparticles via the modification of a solvothermal method from the literature. The nanoparticles generated using this method at first indicated zinc-alloying was successful; yet, further studies into the electronic structure of the particles necessitated the addition of a spin-purification step to ensure only highly soluble particles remained for spin-coating deposition. Compositional and structural analysis of the particles that remained after the additional spin-purification step showed evidence of both the ZnS and FeS2 phases.
520 $a The second part of this work focuses on the development of an alternative method of generating iron pyrite nanoparticles, which would also eventually be used for zinc-alloying. The two approaches focused on are a hydrothermal method in an acid-digestion bomb and a non-injection solvothermal method in an inert environment. The synthesized particles using these methods were phase-pure and did not contain any detectable quantity of other iron sulfides.
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