AgInS2-ZnS quantum dots: Excited state interactions with TiO2 and Photovoltaic Performance

Steven M. Kobosko, Danilo H. Jara, Prashant V. Kamat

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

48 Citas (Scopus)

Resumen

Multinary quantum dots such as AgInS2 and alloyed AgInS2-ZnS are an emerging class of semiconductor materials for applications in photovoltaic and display devices. The nanocrystals of (AgInS2)x-(ZnS)1-x (for x = 0.67) exhibit a broad emission with a maximum at 623 nm and interact strongly with TiO2 nanostructures by injecting electrons from the excited state. The electron transfer rate constant as determined from transient absorption spectroscopy was 1.8 × 1010 s-1. The photovoltaic performance was evaluated over a period of a few weeks to demonstrate the stability of AgInS2-ZnS when utilized as sensitizers in solar cells. We report a power conversion efficiency of 2.25% of our champion cell 1 month after its fabrication. The limitations of AgInS2-ZnS nanocrystals in achieving greater solar cell efficiency are discussed.

Idioma originalInglés
Páginas (desde-hasta)33379-33388
Número de páginas10
PublicaciónACS Applied Materials and Interfaces
Volumen9
N.º39
DOI
EstadoPublicada - 2017
Publicado de forma externa

Áreas temáticas de ASJC Scopus

  • Ciencia de los materiales (todo)

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