Synthesis of FeS2 Nano Crystals for Ink-Based Solar Cells

Autor:	Charles R. Westgate, Tara P. Dhakal, Surya Rajendran, Lakshmi K. Ganta
Rok vydání:	2012
Předmět:	Spin coating Materials science Nanoparticle chemistry.chemical_element Iron sulfide engineering.material Sulfur chemistry.chemical_compound Nanocrystal chemistry Chemical engineering engineering Pyrite Thin film Layer (electronics)
Zdroj:	MRS Proceedings. 1447
ISSN:	1946-4274 0272-9172
DOI:	10.1557/opl.2012.1064
Popis:	Although pyrite (FeS2) is abundant, getting a single-phase pyrite thin film is difficult due to the coexistence of various phases of iron and sulfur in nature. We propose an ink-based process for attaining the pyrite phase of iron sulfide. This work involves degassing Iron (II) chloride in an octadecylamine solution and later reflux with addition of sulfur in diphenyl ether at 200°C. The process yielded phase-pure single crystalline pyrite nanocrystals which were later cleaned and dispersed in chloroform for uniform suspension. Thus obtained nanocrystals were deposited as thin films using drop casting and spin coating. Solar cells were fabricated using CdS as an n-type window layer in a superstrate configuration. When tested, the superstrate type FeS2 nanoparticle cell showed 0.03% with high Voc of 565 mV.
Databáze:	OpenAIRE
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