Interface Engineering by Unsubstituted Pristine Nickel Phthalocyanine as Hole Transport Material for Efficient and Stable Perovskite Solar Cells

Mustafa Haider; Farhan Mudasar; Junliang Yang; Sergey Makarov

doi:10.1021/acsami.4c11544

Interface Engineering by Unsubstituted Pristine Nickel Phthalocyanine as Hole Transport Material for Efficient and Stable Perovskite Solar Cells

ACS Appl Mater Interfaces. 2024 Sep 18;16(37):49465-49473. doi: 10.1021/acsami.4c11544. Epub 2024 Sep 9.

Authors

Mustafa Haider^{1

2}, Farhan Mudasar³, Junliang Yang¹, Sergey Makarov^{4

5}

Affiliations

¹ State Key Laboratory of Powder Metallurgy, School of Physics, Central South University, Changsha 410083, China.
² Advance Solar Technology Institute, Xuancheng 242000, China.
³ Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada.
⁴ School of Physics and Engineering, ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101, Russia.
⁵ Qingdao Innovation and Development Centre, Harbin Engineering University, Qingdao, Shandong 266000, China.

PMID: 39250233
DOI: 10.1021/acsami.4c11544

Abstract

Lead halide perovskite solar cells (PSCs) have been rapidly developed in the past decade. With the development of a PSC, interface engineering plays an increasingly important role in maximizing device performance and long-term stability. We report a simple and effective interface engineering method for achieving improvement of PSCs up to 20% by employing unsubstituted pristine nickel phthalocyanine (NiPc). Thermal annealing of NiPc improves the interface between NiPc and perovskite because of the incorporation of NiPc molecules into the perovskite grain boundaries, which creates improvements in hole extraction from the perovskite absorber layer, as evidenced by time-resolved photoluminescence measurements. This significantly improves the charge transfer and collection efficiency, which are closely related to the improvement of the interface between perovskite and NiPc.

Keywords: defect passivation; nickel phthalocyanine; perovskite solar cells; thermal-induced molecular penetration; unsubstituted dopant-free pristine hole transport material.