Core–shell heterostructured metal oxide arrays enable superior light-harvesting and hysteresis-free mesoscopic perovskite solar cells
KAUST DepartmentMaterials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
KAUST Solar Center (KSC)
MetadataShow full item record
AbstractTo achieve highly efficient mesoscopic perovskite solar cells (PSCs), the structure and properties of an electron transport layer (ETL) or material (ETM) have been shown to be of supreme importance. Particularly, the core-shell heterostructured mesoscopic ETM architecture has been recognized as a successful electrode design, because of its large internal surface area, superior light-harvesting efficiency and its ability to achieve fast charge transport. Here we report the successful fabrication of a hysteresis-free, 15.3% efficient PSC using vertically aligned ZnO nanorod/TiO2 shell (ZNR/TS) core-shell heterostructured ETMs for the first time. We have also added a conjugated polyelectrolyte polymer into the growth solution to promote the growth of high aspect ratio (AR) ZNRs and substantially improve the infiltration of the perovskite light absorber into the ETM. The PSCs based on the as-synthesized core-shell ZnO/TiO2 heterostructured ETMs exhibited excellent performance enhancement credited to the superior light harvesting capability, larger surface area, prolonged charge-transport pathways and lower recombination rate. The unique ETM design together with minimal hysteresis introduces core-shell ZnO/TiO2 heterostructures as a promising mesoscopic electrode approach for the fabrication of efficient PSCs. This journal is © The Royal Society of Chemistry.
CitationMahmood K, Swain BS, Amassian A (2015) Core–shell heterostructured metal oxide arrays enable superior light-harvesting and hysteresis-free mesoscopic perovskite solar cells. Nanoscale 7: 12812–12819. Available: http://dx.doi.org/10.1039/c5nr02874d.
PublisherRoyal Society of Chemistry (RSC)
- Core/Shell Structured TiO2/CdS Electrode to Enhance the Light Stability of Perovskite Solar Cells.
- Authors: Hwang I, Baek M, Yong K
- Issue date: 2015 Dec 23
- Hole-conductor-free perovskite solar cells with carbon counter electrodes based on ZnO nanorod arrays.
- Authors: Wang BX, Liu TF, Zhou YB, Chen X, Yuan XB, Yang YY, Liu WP, Wang JM, Han HW, Tang YW
- Issue date: 2016 Oct 5
- It Takes Two to Tango-Double-Layer Selective Contacts in Perovskite Solar Cells for Improved Device Performance and Reduced Hysteresis.
- Authors: Kegelmann L, Wolff CM, Awino C, Lang F, Unger EL, Korte L, Dittrich T, Neher D, Rech B, Albrecht S
- Issue date: 2017 May 24
- Perovskite Solar Cells with ZnO Electron-Transporting Materials.
- Authors: Zhang P, Wu J, Zhang T, Wang Y, Liu D, Chen H, Ji L, Liu C, Ahmad W, Chen ZD, Li S
- Issue date: 2018 Jan
- Efficient, Hysteresis-Free, and Stable Perovskite Solar Cells with ZnO as Electron-Transport Layer: Effect of Surface Passivation.
- Authors: Cao J, Wu B, Chen R, Wu Y, Hui Y, Mao BW, Zheng N
- Issue date: 2018 Mar