In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 21 ( 2022), p. 8414-8421
Abstract:
The interface between the electron transport layer (ETL) and the perovskite film plays a vital role in the performance of perovskite solar cells (PSCs). Here, (2-hydroxyethyl)amine hydroiodide (EOAI) is employed to regulate the interface properties at the SnO 2 /perovskite. The –NH 3 + positive and I − negative ion groups in EOAI, which are anchored on the surface of SnO 2 through –OH groups, can passivate the interface defects of perovskite films. Besides, the modified ETL has a smaller work function (WF) and E VB than pristine ones, which contributes to efficient charge transport and collection. Furthermore, the introduction of EOAI can also improve the crystallinity of the perovskite layer. As a result, PSCs with EOAI-modified SnO 2 produce a champion power conversion efficiency (PCE) of 22.61%, and an improved environmental stability. At the same time, the 1.68 eV wide-band gap perovskite solar cell achieved a PCE close to 20% and the semitransparent device also achieved an efficiency of over 17%.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702245-6
Permalink