Epitaxial 1D electron transport layers for high-performance perovskite solar cells

Han, Gill Sang; Chung, Hyun Suk; Kim, Dong Hoe; Kim, Byeong Jo; Lee, Jin Wook; Park, Nam Gyu; Cho, In Sun; Lee, Jung Kun; Lee, Sangwook; Jung, Hyun Suk

doi:10.1039/c5nr03476k

Cited by 48 publications

(26 citation statements)

References 57 publications

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“…This increased interfacial contact establishes a more direct electron pathway for faster electron transport compared to cells featuring 0D titania‐nanoparticle ETLs (Figure f) . Other 1D oxide structures, including SnO 2 nanowires or ZnO nanorods, have also been employed as efficient ETLs in PSCs …”

Section: Effect Of the Microstructure Of The Etlmentioning

confidence: 99%

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

et al. 2017

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The efficiencies of the hybrid organic-inorganic perovskite solar cells have been rapidly approaching the benchmarks held by the leading thin-film photovoltaic technologies. Arguably, one of the most important factors leading to this rapid advancement is the ability to manipulate the microstructure of the perovskite layer and the adjacent functional layers within the device. Here, an analysis of the nucleation and growth models relevant to the formation of perovskite films is provided, along with the effect of the perovskite microstructure (grain sizes and voids) on device performance. In addition, the effect of a compact or mesoporous electron-transport-layer (ETL) microstructure on the perovskite film formation and the optical/photoelectric properties at the ETL/perovskite interface are overviewed. Insight into the formation of the functional layers within a perovskite solar cell is provided, and potential avenues for further development of the perovskite microstructure are identified.

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Section: Effect Of the Microstructure Of The Etlmentioning

confidence: 99%

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

et al. 2017

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“…In addition, the electron transport rate in 1D nanostructures such as nanofibers, nanowires, nanocolumns, and nanorods has been considered to be several orders of magnitude faster than that of nanoparticles 29, 30, 31, 32. This is achieved by reducing the scattering of free electrons from the grain boundaries of the interconnected nanoparticles 33.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes in TiO₂ Nanofiber Photoelectrodes for High‐Performance Perovskite Solar Cells

et al. 2017

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1D semiconducting oxides are unique structures that have been widely used for photovoltaic (PV) devices due to their capability to provide a direct pathway for charge transport. In addition, carbon nanotubes (CNTs) have played multifunctional roles in a range of PV cells because of their fascinating properties. Herein, the influence of CNTs on the PV performance of 1D titanium dioxide nanofiber (TiO2 NF) photoelectrode perovskite solar cells (PSCs) is systematically explored. Among the different types of CNTs, single‐walled CNTs (SWCNTs) incorporated in the TiO2 NF photoelectrode PSCs show a significant enhancement (≈40%) in the power conversion efficiency (PCE) as compared to control cells. SWCNTs incorporated in TiO2 NFs provide a fast electron transfer within the photoelectrode, resulting in an increase in the short‐circuit current (J sc) value. On the basis of our theoretical calculations, the improved open‐circuit voltage (V oc) of the cells can be attributed to a shift in energy level of the photoelectrodes after the introduction of SWCNTs. Furthermore, it is found that the incorporation of SWCNTs into TiO2 NFs reduces the hysteresis effect and improves the stability of the PSC devices. In this study, the best performing PSC device constructed with SWCNT structures achieves a PCE of 14.03%.

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“…Up to now, different kinds of 1D TiO 2 structures, such as nanorods, nanocone, nanowires, and nanotubes, have been used in PSCs. So far, there are few reports about 1D SnO 2 nanostructured ETMs for PSCs, and neither of them have so satisfactory PCE. Herein, highly crystalline 1D SnO 2 nanorods (SR) synthesized by a facile hydrothermal method, are used as ETMs successfully.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of SnO₂ Nanorod Arrays Films as Electron Transporting Layer for Perovskite Solar Cells

Wang

Cai

et al. 2018

Solar RRL

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As the vital competent in high performance perovskite solar cells (PSCs), the inorganic metal oxide electron transporting materials (ETMs) with tailored architectures are responsible for extracting and transporting photogenerated electrons and preventing the recombination effectively. Here, a facile hydrothermal method is demonstrated for the growth of highly crystalline and uniform 1D SnO 2 nanorod arrays (SR) with excellent optical property, which are further successfully exploited as ETMs in PSCs. Both length and diameter of 1D SR are tuned carefully by optimizing the hydrothermal process. Power conversion efficiency (PCE) as high as 16.7% can be obtained for PSCs based on these SR. Furthermore, a graded heterojunction (GHJ) configuration was built by intercalating a TiO 2 thin interlayer to improve the band alignment between perovskite and SR, which pushes the PCE to 18.7% with better ambient stability. This work demonstrates that the SR can act as a promising candidate for ETM in PSCs, and provides a workable stategy to improve the performance of PSCs.

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Epitaxial 1D electron transport layers for high-performance perovskite solar cells

Cited by 48 publications

References 57 publications

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

Carbon Nanotubes in TiO₂ Nanofiber Photoelectrodes for High‐Performance Perovskite Solar Cells

Facile Fabrication of SnO₂ Nanorod Arrays Films as Electron Transporting Layer for Perovskite Solar Cells

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Epitaxial 1D electron transport layers for high-performance perovskite solar cells

Cited by 48 publications

References 57 publications

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

Effect of the Microstructure of the Functional Layers on the Efficiency of Perovskite Solar Cells

Carbon Nanotubes in TiO2 Nanofiber Photoelectrodes for High‐Performance Perovskite Solar Cells

Facile Fabrication of SnO2 Nanorod Arrays Films as Electron Transporting Layer for Perovskite Solar Cells

Contact Info

Product

Resources

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Carbon Nanotubes in TiO₂ Nanofiber Photoelectrodes for High‐Performance Perovskite Solar Cells

Facile Fabrication of SnO₂ Nanorod Arrays Films as Electron Transporting Layer for Perovskite Solar Cells