Nickel oxide interlayer films from nickel formate–ethylenediamine precursor: influence of annealing on thin film properties and photovoltaic device performance

Steirer, K. Xerxes; Richards, Ryan M.; Sigdel, Ajaya K.; García, Alberto Luis García; Ndione, Paul F.; Hammond, Scott R.; Baker, Darick J.; Ratcliff, Erin L.; Curtis, Calvin J.; Furtak, T. E.; Ginley, David S.; Olson, Dana C.; Armstrong, Neal R.; Berry, Joseph J.

doi:10.1039/c5ta01379h

Cited by 48 publications

(25 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…15 Recently, several hole transport materials (HTM) have also been introduced into the perovskite solar cells in place of PEDOT:PSS to obtain probable device application or efficient devices. [19][20][21][22][23][24][25][26][27][28][29][30][31][32] The typical requirements for HTMs of perovskite solar cells are as follows.…”

Section: Introductionmentioning

confidence: 99%

“…NiO x has been introduced as the HTM and electron blocking layer for perovskite solar cells to improve the stability of the device by place from organic HTM to inorganic HTM. [19][20][21][22][23][24][25][26][27][28][29] The valence band edge (E VB ) of NiO x is also energetically matched with that of perovskite. 19,22,25,26,33 The transmittance of NiO x is very high in the visible region because the band gap of NiO is over 3.0 eV.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Carrier Transport in NiO on the Photovoltaic Properties of Lead Iodide Perovskite Solar Cells

et al. 2017

View full text Add to dashboard Cite

The effect of the NiO x thickness on the photovoltaic properties in planar type lead iodide perovskite solar cells consisted of Tin-doped indium oxide (ITO)/NiO x /Perovskite/Phenyl-C61-Butyric-Acid-Methyl Ester (PCBM)/Ag was investigated. For films ranging from 35 nm to 120 nm in the thickness, the NiO x thickness was found to be not crucial in fill factor and open circuit voltage. Calculations of the carrier flux in NiO x , estimated from Einstein-Smoluchowski relation and Fick's first law, found the carrier transport ability of the NiO x to fully compensate the photo-generated current density in perovskite layers and the theoretical current density ca. 26 mA cm −2 . The favorable physical properties such as mobility and thickness were also estimated for effective carrier transport in perovskite solar cells assuming that the carrier density is 10 15 cm −3.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Carrier Transport in NiO on the Photovoltaic Properties of Lead Iodide Perovskite Solar Cells

et al. 2017

View full text Add to dashboard Cite

show abstract

“…On the other hand, the τ 2 was longer in the ET-OH–applied sample, by 11.5 ns, with a charge-recombination tendency [82,83,84]. In conclusion, we found a relatively better charge transfer (or charge separation) tendency in the B-OH materials than that of the ET-OH materials, which were commonly used in earlier studies [60,61], because the average τ avg. value was shorter in the B-OH samples by 8.83 ns [85,86,87].…”

Section: Resultsmentioning

confidence: 53%

“…The properties of the material are shown in Table S1, and the NiO x solution and substrate photographs are shown in Figure S1. Using these materials, the device was fabricated with the composition shown in Figure 1 [60,61].…”

Section: Methodsmentioning

confidence: 99%

Facile NiOx Sol-Gel Synthesis Depending on Chain Length of Various Solvents without Catalyst for Efficient Hole Charge Transfer in Perovskite Solar Cells

2018

View full text Add to dashboard Cite

Nickel oxide (NiOx)–based perovskite solar cells (PSCs) have recently gained considerable interest, and exhibit above 20% photovoltaic efficiency. However, the reported syntheses of NiOx sol-gel used toxic chemicals for the catalysts during synthesis, which resulted in a high-temperature annealing requirement to remove the organic catalysts (ligands). Herein, we report a facile “NiOx sol-gel depending on the chain length of various solvents” method that eschews toxic catalysts, to confirm the effect of different types of organic solvents on NiOx synthesis. The optimized conditions of the method resulted in better morphology and an increase in the crystallinity of the perovskite layer. Furthermore, the use of the optimized organic solvent improved the absorbance of the photoactive layer in the PSC device. To compare the electrical properties, a PSC was prepared with a p-i-n structure, and the optimized divalent alcohol-based NiOx as the hole transport layer. This improved the charge transport compared with that for the typical 1,2-ethanediol (ethylene glycol) used in earlier studies. Finally, the optimized solvent-based NiOx enhanced device performance by increasing the short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF), compared with those of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)–based devices.

show abstract

“…Generally, there are two well-established growth mechanisms based on the catalyst location in the CNTs: Base and tip growth mechanisms [40,41,42]. The state of a catalyst is determined by its melting point and has great effects on the growth of CNTs.…”

Section: Resultsmentioning

confidence: 99%

Micro-Nano Carbon Structures with Platelet, Glassy and Tube-Like Morphologies

et al. 2019

View full text Add to dashboard Cite

Carbon source precursors for high-grade, clean, and low-carbon refractories were obtained by in situ exfoliation of flake graphite (FG) and phenol–formaldehyde resin (PF) composites with three-roll milling (TRM) for the fabrication of graphite nanoplatelets. In addition, by using Ni(NO3)2·6H2O as a catalyst in the pyrolysis process, multidimensional carbon nanostructures were obtained with coexisting graphite nanoplatelets (GNPs), glassy carbon (GC), and carbon nanotubes (CNTs). The resulting GNPs (exfoliated 16 times) had sizes of 10–30 μm, thicknesses of 30–50 nm, and could be uniformly dispersed in GC from the PF pyrolysis. Moreover, Ni(NO3)2·6H2O played a key role in the formation and growth of CNTs from a catalytic pyrolysis of partial PF with the V–S/tip growth mechanisms. The resulting multidimensional carbon nanostructures with GNPs/GC/CNTs are attributed to the shear force of the TRM process, pyrolysis, and catalytic action of nitrates. This method reduced the production costs of carbon source precursors for low-carbon refractories, and the precursors exhibited excellent performances when fabricated on large scales.

show abstract

Nickel oxide interlayer films from nickel formate–ethylenediamine precursor: influence of annealing on thin film properties and photovoltaic device performance

Abstract: Decomposition/oxidation correlated to nanoscale c-AFM helps separate selectivity and conductivity.

Cited by 48 publications

References 76 publications

Effect of Carrier Transport in NiO on the Photovoltaic Properties of Lead Iodide Perovskite Solar Cells

Effect of Carrier Transport in NiO on the Photovoltaic Properties of Lead Iodide Perovskite Solar Cells

Facile NiOx Sol-Gel Synthesis Depending on Chain Length of Various Solvents without Catalyst for Efficient Hole Charge Transfer in Perovskite Solar Cells

Micro-Nano Carbon Structures with Platelet, Glassy and Tube-Like Morphologies

Contact Info

Product

Resources

About