Room-Temperature-Sputtered Nanocrystalline Nickel Oxide as Hole Transport Layer for p–i–n Perovskite Solar Cells
de Bastiani, Michele
Alzahrani, Areej A.
De Wolf, Stefaan
KAUST DepartmentComputational Physics and Materials Science (CPMS)
KAUST Solar Center (KSC)
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR-CARF URF/1/3079-33-01
Online Publication Date2018-10-18
Print Publication Date2018-11-26
Permanent link to this recordhttp://hdl.handle.net/10754/631314
MetadataShow full item record
AbstractNickel oxide (NiOx) is a promising hole transport layer (HTL) for perovskite solar cells (PSCs), as it combines good chemical stability, high broadband optical transparency, and a high work function. Excellent power conversion efficiencies (PCEs) have already been reported using solution-processed NiOx. However, solution-based techniques usually require high-temperature postannealing to achieve the required HTL properties of NiOx, which jeopardizes its use for many applications, such as monolithic tandem solar cells. To resolve this issue, we developed room-temperature-sputtered NiOx and demonstrated p–i–n PSCs with 17.6% PCE (with negligible hysteresis), which are comparable to the best PSCs using sputtered and annealed NiOx without heteroatom doping. Through detailed characterization and density functional theory (DFT) analysis, we explored the electrical and optical properties of the obtained NiOx films and find that they are strongly linked with the specific defect chemistry of this material. Finally, in view of its use in perovskite/silicon tandem solar cells, we find that direct sputtering on random-pyramid textured silicon wafers results in highly conformal NiOx films.
CitationAydin E, Troughton J, De Bastiani M, Ugur E, Sajjad M, et al. (2018) Room-Temperature-Sputtered Nanocrystalline Nickel Oxide as Hole Transport Layer for p–i–n Perovskite Solar Cells. ACS Applied Energy Materials 1: 6227–6233. Available: http://dx.doi.org/10.1021/acsaem.8b01263.
SponsorsThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award no. OSR-CARF URF/1/3079-33-01.
PublisherAmerican Chemical Society (ACS)
JournalACS Applied Energy Materials