Hydrogenated TiO2 as efficient electron transport layer of planar perovskite solar cell

Ma, Yulong; Deng, Kaiming; Gu, Bangkai; Lü, Hao; Zhu, Yayun; Li, Liang

doi:10.5185/amlett.2018.1944

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 16,17 ] In Figure 4b, the peak centered at 529.16 eV, which is typical for the O 2− in TiO bonds in TiO 2 , [ 16,17 ] is clearly seen in the sample of TiO 2 powder, whereas suppressed in all samples of black TiO 2 QDs. The additional 531–532 eV peaks observed in the black TiO 2 QDs are assigned to the OH bonds, [ 16,17 ] indicating that hydroxyl is formed through hydrogenation process. By further considering these peaks, the most shift of XPS spectra, both in the O 1 s and Ti 2p range, is found in the sample prepared by 0.4 m KCl.…”

Section: Resultsmentioning

confidence: 99%

“…The two peaks around 464 and 458 eV, which are observed in all samples, are attributed to the Ti 4+ O bonds in TiO 2 . [ 16,17 ] Particularly, the additional 456–457 eV peaks are found only in the black TiO 2 QDs sample, which is attributed to the TiH bonds. [ 16,17 ] In Figure 4b, the peak centered at 529.16 eV, which is typical for the O 2− in TiO bonds in TiO 2 , [ 16,17 ] is clearly seen in the sample of TiO 2 powder, whereas suppressed in all samples of black TiO 2 QDs.…”

Section: Resultsmentioning

confidence: 99%

“…[ 16,17 ] Particularly, the additional 456–457 eV peaks are found only in the black TiO 2 QDs sample, which is attributed to the TiH bonds. [ 16,17 ] In Figure 4b, the peak centered at 529.16 eV, which is typical for the O 2− in TiO bonds in TiO 2 , [ 16,17 ] is clearly seen in the sample of TiO 2 powder, whereas suppressed in all samples of black TiO 2 QDs. The additional 531–532 eV peaks observed in the black TiO 2 QDs are assigned to the OH bonds, [ 16,17 ] indicating that hydroxyl is formed through hydrogenation process.…”

Section: Resultsmentioning

confidence: 99%

“…[ 16 ] This property leads to an enhancement of efficiency in some applications such as water purification and solar cell. [ 17 ] Moreover, the black TiO 2 exhibits better interlayer electronic properties such as reducing recombination when working with other components in perovskite solar cell. However, the preparation of black TiO 2 is complex and requires to control the environment, pressure, and purity at high temperature.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Growth of Black TiO₂ Quantum Dots by Solution‐Based Electrochemical Process

Saranrom

Sintiam

Panyathip

et al. 2020

Physica Status Solidi (a)

View full text Add to dashboard Cite

Black titanium dioxide (TiO2) quantum dots (QDs) are grown by a solution‐based electrochemical process and an effect of KCl concentration on the growth is investigated. The electrochemical process is demonstrated as a simple one‐step process for the growth of black TiO2 QDs in the solutions via bottom–up process. From the absorption spectra, the absorption appears for an entire visible wavelength (400–700 nm) implying a black TiO2 property. The average size of the black TiO2 QDs is about 4.5 nm from the transmission electron microscopy results and is similar to all KCl concentrations. This indicates that KCl concentration has no effect on the particle size, but has effect on the hydrodynamic size of TiO2 QDs. The black TiO2 QDs can be produced by the hydrogenation process of hydrogen ions during electrochemical process. The obtained black TiO2 QDs can be further explored as an electron‐transporting layer for a perovskite solar cell application.

show abstract

Section: Resultsmentioning

confidence: 99%