In:
Advanced Materials, Wiley, Vol. 30, No. 14 ( 2018-04)
Abstract:
The carrier concentration of the electron‐selective layer (ESL) and hole‐selective layer can significantly affect the performance of organic–inorganic lead halide perovskite solar cells (PSCs). Herein, a facile yet effective two‐step method, i.e., room‐temperature colloidal synthesis and low‐temperature removal of additive (thiourea), to control the carrier concentration of SnO 2 quantum dot (QD) ESLs to achieve high‐performance PSCs is developed. By optimizing the electron density of SnO 2 QD ESLs, a champion stabilized power output of 20.32% for the planar PSCs using triple cation perovskite absorber and 19.73% for those using CH 3 NH 3 PbI 3 absorber is achieved. The superior uniformity of low‐temperature processed SnO 2 QD ESLs also enables the fabrication of ≈19% efficiency PSCs with an aperture area of 1.0 cm 2 and 16.97% efficiency flexible device. The results demonstrate the promise of carrier‐concentration‐controlled SnO 2 QD ESLs for fabricating stable, efficient, reproducible, large‐scale, and flexible planar PSCs.
Type of Medium:
Online Resource
ISSN:
0935-9648
,
1521-4095
DOI:
10.1002/adma.201706023
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
1474949-X
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