Artigo Revisado por pares

Dimensional Mixing Increases the Efficiency of 2D/3D Perovskite Solar Cells

2020; American Chemical Society; Volume: 11; Issue: 13 Linguagem: Inglês

10.1021/acs.jpclett.0c01444

ISSN

1948-7185

Autores

Sam Teale, Andrew H. Proppe, Eui Hyuk Jung, Andrew Johnston, Darshan H. Parmar, Bin Chen, Yi Hou, Shana O. Kelley, Edward H. Sargent,

Tópico(s)

Organic Electronics and Photovoltaics

Resumo

2D/3D heterojunction perovskite solar cells have demonstrated superior efficiency and stability compared to their fully 3D counterparts. Previous studies have focused on producing 2D layers containing predominantly n = 1 perovskite quantum wells. In this report we demonstrate a technique to introduce dimensional mixing into the 2D layer, and we show that this leads to more efficient devices relative to controls. Simulations suggest that the improvements are due to a reduction in trap state density and superior band alignment between the 3D/2D perovskite and the hole-transporting layer.

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