Highly Selective and Scalable Fullerene-Cation-Mediated Synthesis Accessing Cyclo[60]fullerenes with Five-Membered Carbon Ring and Their Application to Perovskite Solar Cells

Lin, Hao‐Sheng; Jeon, Il; Chen, Yingqian; Yang, Xiaoyu; Nakagawa, Takafumi; Maruyama, Shigeo; Manzhos, Sergei; Matsuo, Yutaka

doi:10.1021/acs.chemmater.9b02468

Cited by 47 publications

(33 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pores filled by perovskite in m-TiO 2 could effectively increase the contact area between TiO 2 nanoparticles and CsPbIBr 2 . The –OH–Pb group was advantageous for enhancing the interface contact, reducing trap states of the perovskite film, improving the electron extraction and charging transport rates [ 47 , 48 ], as well as restraining the recombination of charge carriers at the interface to help decrease the hysteresis of CsPbIBr 2 device, as proved by the PL and J-V measurements.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Modification of Mesoporous TiO2 Films with PbI2-Ethanolamine-Dimethyl Sulfoxide Solution for CsPbIBr2 Perovskite Solar Cells

Meng

Chi

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

As one of the most frequently-used electron-transporting materials, the mesoporous titanium dioxide (m-TiO2) film used in mesoporous structured perovskite solar cells (PSCs) can be employed for the scaffold of the perovskite film and as a pathway for electron transport, and the contact area between the perovskite and m-TiO2 directly determines the comprehensive performance of the PSCs. Because of the substandard interface combining quality between the all-inorganic perovskite CsPbIBr2 and m-TiO2, the development of the mesoporous structured CsPbIBr2 PSCs synthesized by the one-step method is severely limited. Here, we used a solution containing PbI2, monoethanolamine (EA) and dimethyl sulfoxide (DMSO) (PED) as the interfacial modifier to enhance the contact area and modify the m-TiO2/CsPbIBr2 contact characteristics. Comparatively, the performance of the solar device based on the PED-modified m-TiO2 layer has improved considerably, and its power conversion efficiency is up to 6.39%.

show abstract

Section: Resultsmentioning

confidence: 99%

Interfacial Modification of Mesoporous TiO2 Films with PbI2-Ethanolamine-Dimethyl Sulfoxide Solution for CsPbIBr2 Perovskite Solar Cells

Meng

Chi

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The n t and V TFL values are calculated from the equation, V TFL = n t ed 2 /2 ε 0 ε r , where e is electric charge (1.602 × 10 −19 V m −1 ), d is the thickness of the active layer, ε 0 is the vacuum permittivity (8.85 × 10 −14 F cm −1 ), and ε r is the relative dielectric constant taken as 46.9 V TFL = n t ed 2 /2 ε 0 ε r , where e is electric charge (1.602 × 10 −19 V m −1 ), d is the thickness of the active layer, ε 0 is the vacuum permittivity (8.85 × 10 −14 F cm −1 ), and ε r is the relative dielectric constant taken as 46.9. [ 76 ] The experimental dark current density was measured under an applied voltage swept from 0 to −3 V. EIS measurements were conducted by Solartron Analytical 1255B under AM1.5G light condition.…”

Section: Methodsmentioning

confidence: 99%

Denatured M13 Bacteriophage‐Templated Perovskite Solar Cells Exhibiting High Efficiency

et al. 2020

Self Cite

View full text Add to dashboard Cite

The M13 bacteriophage, a nature-inspired environmentally friendly biomaterial, is used as a perovskite crystal growth template and a grain boundary passivator in perovskite solar cells. The amino groups and carboxyl groups of amino acids on the M13 bacteriophage surface function as Lewis bases, interacting with the perovskite materials. The M13 bacteriophage-added perovskite films show a larger grain size and reduced trap-sites compared with the reference perovskite films. In addition, the existence of the M13 bacteriophage induces light scattering effect, which enhances the light absorption particularly in the long-wavelength region around 825 nm. Both the passivation effect of the M13 bacteriophage coordinating to the perovskite defect sites and the light scattering effect intensify when the M13 virus-added perovskite precursor solution is heated at 90°C prior to the film formation. Heating the solution denatures the M13 bacteriophage by breaking their inter-and intra-molecular bondings. The denatured M13 bacteriophage-added perovskite solar cells exhibit an efficiency of 20.1% while the reference devices give an efficiency of 17.8%. The great improvement in efficiency comes from all of the three photovoltaic parameters, namely short-circuit current, open-circuit voltage, and fill factor, which correspond to the perovskite grain size, trap-site passivation, and charge transport, respectively.

show abstract

“…Applied alkoxy substrate, indano[60]fullerene 1a, was synthesized according to our previously reported fullerene-cation-mediated synthetic strategy. 8 The optimized reactions are summarized in Table, which . It is worth noting that 2a can be obtained in equally high yield when the reaction was carried out in ambient environment (entry 14).…”

Section: Resultsmentioning

confidence: 99%

“…Applied alkoxy substrate, indano[60]fullerene 1a, was synthesized according to our previously reported fullerene-cation-mediated synthetic strategy. 8 The optimized reactions are summarized in Table, which includes the screening of the oxidants, reaction temperature, and reaction time. The optimized conditions successfully achieved [60]fullerene-fused ketone 2a was obtained in an isolated yield of 94%, with 4.0 equiv.…”

Section: Resultsmentioning

confidence: 99%

One-Step Direct Oxidation of Alkoxy to Ketone for Evaporable Fullerene-Fused Ketone as Efficient Electron-Transport Materials

Lin¹,

Xiang²,

Manzhos³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Ketones, one of widely applied moieties in designing electrical and medical materials, commonly converted from the alcohols through the oxidation reactions. However, when alcohols are protected/functionalized, the direct oxidation strategies are substantially curbed. Here we show a highly efficient copper bromide promoted one-step direct oxidation of alkoxy to ketone with the aid of a fullerene pendant. Mechanistic studies unveil that fullerene can serve as an electron poor proceeding the one-step oxidation of alkoxy group to ketone. In the absence of fullerene pendant, the unreachable activation energy threshold hampers the direct oxidation of alkoxy group. In the presence of fullerene pendant, copper bromide oxidized fullerene radical cation can activate neighboring C–H bond of alkoxy moieties, allowing a favorable energy barrier for initiating the direct oxidation of alkoxy group. Produced fullerene-fused ketone indicates high thermal stability, affording the pin-hole free and amorphous electron-transport layer with high electron-transport mobility.

show abstract

Highly Selective and Scalable Fullerene-Cation-Mediated Synthesis Accessing Cyclo[60]fullerenes with Five-Membered Carbon Ring and Their Application to Perovskite Solar Cells

Cited by 47 publications

References 89 publications

Interfacial Modification of Mesoporous TiO2 Films with PbI2-Ethanolamine-Dimethyl Sulfoxide Solution for CsPbIBr2 Perovskite Solar Cells

Interfacial Modification of Mesoporous TiO2 Films with PbI2-Ethanolamine-Dimethyl Sulfoxide Solution for CsPbIBr2 Perovskite Solar Cells

Denatured M13 Bacteriophage‐Templated Perovskite Solar Cells Exhibiting High Efficiency

One-Step Direct Oxidation of Alkoxy to Ketone for Evaporable Fullerene-Fused Ketone as Efficient Electron-Transport Materials

Contact Info

Product

Resources

About