Influence of high energy ion irradiation on fullerene derivative (PCBM) thin films

Sharma, Teena; Singhal, Rahul; Vishnoi, Ritu; Lakshmi, G.B.V.S.; Biswas, S.K.

doi:10.1016/j.nimb.2017.02.003

Cited by 6 publications

(7 citation statements)

References 35 publications

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“…It disappears almost entirely when the irradiation fluence rises to 5×10 14 p/cm 2 , implying that the C 60 cage has been seriously destroyed, and part of C 60 cage is transformed into amorphous carbon structure. [19,20,23,26] In summary, SRIM simulation and Raman spectra suggest that the significant degradation of the optical property can be attributed to the displacement damage to the PCBM films. These defects give rise to the introduction of deep defect levels into the bandgap of the PCBM, which act as non-radiative recombination centers, thereby reducing the PL intensity.…”

Section: Resultsmentioning

confidence: 89%

“…The peak positions are consistent with previously reported results. [19,20,25] Among these modes, the most intense Raman mode located at 1460 cm −1 corresponds to the "pentagonal pinch mode", which originates from the vibration of the C 60 cage in PCBM. [26] As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…At this moment more energy can be deposited and transfer to the PCBM films by electron-phonon coupling. [20,34,35] Consequently, the temperature of the regions irradiated by high-fluence protons increases immediately due to the formation of thermal spike in nanoscale region. [36] The remarkable increase of the temperature in local region is beneficial to the polymerization reactions between methoxy radicals and defective PCBM film as displayed in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[17] To date, most of studies on the irradiation effects of the PCBM films have focused mainly on electron [18,19] and heavy ion irradiation. [20] For instance, Yoo et al reported that the bandgaps of the PCBM films can be controlled by electron irradiation and an increasement of the bandgap is observed after having been irradiated. [19] Additionally, previous research has also found a decrease in the bandgap of the PCBM film after having been irradiated by 55-MeV Si 4+ ions.…”

Section: Introductionmentioning

confidence: 99%

“…[19] Additionally, previous research has also found a decrease in the bandgap of the PCBM film after having been irradiated by 55-MeV Si 4+ ions. [20] However, few studies have attempted to explore the influence of proton irradiation on the PCBM films and reveal their damage mechanism. As is well known, the proton irradiation is unavoidable for the photoelectric devices working in space environments, protons being the main energetic particles in space.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of optical properties and molecular structure of PCBM films under proton irradiation

Xiong¹,

Zhu²,

Wang³

et al. 2022

Chinese Phys. B

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Low-energy proton irradiation effects on the optical properties and the molecular structure of phenyl-C61-butyric acid methyl ester (PCBM) are studied in this work. The PCBM films are irradiated by 100-keV proton beams with fluences of 5 × 1012 p/cm2, 5 × 1013 p/cm2, and 5 × 1014 p/cm2, respectively. The photoluminescence (PL) peaks of the post-irradiated PCBM films show a progressive decrease in the peak intensity as the proton fluences increase, which can be attributed to the deep defect levels induced by proton irradiation. Additionally, a slight blue-shift in the PL spectrum is also observed at a proton fluence of 5 × 1014 p/cm2. The underlying mechanism can be traced back to the lift of the lowest unoccupied molecular orbital (LUMO) level, which is caused by the attachment of methoxy radicals on ortho position of the phenyl ring in the post-irradiated PCBM structure. This work is of significance in understanding the radiation hardness and the damage mechanism of the PCBM film in radiation environments, which is essential before it is put into practical application in space.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evolution of optical properties and molecular structure of PCBM films under proton irradiation

Xiong¹,

Zhu²,

Wang³

et al. 2022

Chinese Phys. B

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Enhanced performance of hollow polystyrene spheres for inertial confined fusion by noncovalent interactions

Liu,

Chen,

Liu

et al. 2024

Polymer Engineering & Sci

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Thin‐walled polystyrene (PS) spheres are needed for preparing the targets in the inertial confined fusion (ICF). To prevent the occurrence of craze and crack in the fabrication of the spheres, a noncovalent interaction route is developed to improve the mechanical properties of thin‐walled polystyrene spheres based on a fullerene derivative, reducing the craze and crack yield. The introduction of phenyl‐C61‐butyric acid methyl ester (PCBM) into PS spheres not only improves the thermal stability, but also reduces the craze and crack yield, probably to the π–π interaction between PCBM and PS and the hydrophobicity of PCBM. The sphericity and surface finishing of the spheres also increase at the same time. Mechanism of how the PCBM improve the quality of the spheres is also discussed.Highlights A noncovalent interaction route to improve properties of PS spheres is proposed. PS/PCBM spheres with good quality are successfully designed and fabricated. Mechanisms of how the PCBM improve properties of PS spheres are also discussed.

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A feasible and effective solution-processed PCBM electron extraction layer enabling the high VOC and efficient Cu2ZnSn(S, Se)4 devices

Lou

Gong

Zhou

et al. 2022

Journal of Energy Chemistry

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Influence of high energy ion irradiation on fullerene derivative (PCBM) thin films

Cited by 6 publications

References 35 publications

Evolution of optical properties and molecular structure of PCBM films under proton irradiation

Evolution of optical properties and molecular structure of PCBM films under proton irradiation

Enhanced performance of hollow polystyrene spheres for inertial confined fusion by noncovalent interactions

A feasible and effective solution-processed PCBM electron extraction layer enabling the high VOC and efficient Cu2ZnSn(S, Se)4 devices

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