Solution-Processed, Solid-State Solar Cells based on Environmentally Friendly AgBiS2 Nanocrystals
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hdl:2117/100690
Tipus de documentArticle
Data publicació2016-06-20
EditorNature
Condicions d'accésAccés obert
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Abstract
Solution-processed inorganic solar cells are a promising low-cost alternative to firstgeneration
solar cells.1,2 Solution processing at low temperatures and the use of nontoxic
and abundant elements can help minimize cost and facilitate regulatory acceptance.
However, until now there has been no material that exhibits all of these features while
demonstrating promising efficiencies. Many of the most promising solution-processed
inorganic solar cells contain toxic elements such as lead or cadmium (perovskites,2,3 PbS,4
CdTe,5,6 CdS(Se)7,8) or scarce elements like tellurium or indium (CdTe, CIGS(Se)/CIS9,10).
Others require high-temperature processes such as selenization or sintering or rely on
vacuum deposition techniques ((Sb2S(Se)3,11–13 SnS,14,15 CZTS(Se)16). Here, we present
AgBiS2 nanocrystals as a novel nontoxic,17 earth-abundant18 material for highperformance,
solution-processed solar cells fabricated in ambient conditions at low
temperatures (≤100°C). The AgBiS2 nanocrystals have favorable properties for solar-cell
applications including a near-ideal bandgap and strong, broad absorption. We
demonstrate a Newport certified power conversion efficiency of 6.3% with no hysteresis
and a remarkably high short-circuit current density of about 22 mA·cm-2 for an active
layer thickness of only ~35 nm.
CitacióBernechea, María [et al.]. Solution-Processed, Solid-State Solar Cells based on Environmentally Friendly AgBiS2 Nanocrystals. "", 20 Juny 2016, vol. 10, p. 521-525.
ISSN1749-4885
Versió de l'editorhttp://www.nature.com/nphoton/journal/v10/n8/full/nphoton.2016.108.html
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