Structural and optical properties of exfoliated graphene-like carbon nitride into nanosheets and quantum dots

Pareek, Saurabh; Waheed, Sobia; Sharma, Punit; Karak, Supravat

doi:10.1016/j.matchar.2020.110646

Cited by 11 publications

(8 citation statements)

References 44 publications

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“…This could be because of the presence of mid-gap states in NPCN, that provides surface states to accommodate photogenerated electron thereby inhibiting rapid recombination of charge carriers. 33 A detailed discussion on the mid-gap states of catalysts is presented in later sections.…”

Section: Resultsmentioning

confidence: 99%

Accelerating NADH oxidation and hydrogen production with mid-gap states of nitrogen-rich carbon nitride photocatalyst

Bhoyar¹,

Kim²,

Abraham³

et al. 2022

iScience

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Section: Resultsmentioning

confidence: 99%

Accelerating NADH oxidation and hydrogen production with mid-gap states of nitrogen-rich carbon nitride photocatalyst

Bhoyar¹,

Kim²,

Abraham³

et al. 2022

iScience

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“…According to the FTIR spectra, nanosheets were structurally similar to that of the bulk counterpart even after exfoliation, except for reduced signal intensity. The nanosheet dispersion in water showed excellent chemical and physical stability for almost 8–10 months due to the presence of carboxylate and hydroxyl groups …”

Section: Resultsmentioning

confidence: 99%

“…The nanosheet dispersion in water showed excellent chemical and physical stability for almost 8−10 months due to the presence of carboxylate and hydroxyl groups. 39 Work Function Measurement of g-C 3 N 4 NS Thin Film. To explore g-C 3 N 4 nanosheets as an interface layer for polymer solar cells, the energy level was estimated by calculating the surface potential using kelvin probe force microscopy (KPFM).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The final pale yellow color product was utilized as the starting precursor for the synthesis of nanosheets (NS). The nanosheets were prepared via a liquid exfoliation process using water as a solvent . Briefly, the bulk material was dispersed in deionized (DI) water followed by ultrasonication for 24 h. The suspension obtained was centrifuged at 8000 rpm for separating larger-size particles.…”

Section: Methodsmentioning

confidence: 99%

“…The nanosheets were prepared via a liquid exfoliation process using water as a solvent. 39 Briefly, the bulk material was dispersed in deionized (DI) water followed by ultrasonication for 24 h. The suspension obtained was centrifuged at 8000 rpm for separating larger-size particles. The solution containing g-C 3 N 4 nanosheets was collected from the top leaving behind larger particles.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Graphitic Carbon Nitride Nanosheets: Dual Functional Charge Selective Cathode/Anode Interface Layer for Polymer Solar Cells

Pareek

Waheed

Karak

2022

ACS Appl. Energy Mater.

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Here, we report a systematic study proposing the utilization of graphitic carbon nitride nanosheets (g-C 3 N 4 NS) thin film as a charge-selective cathode/anode interface layer for inverted as well as conventional polymer solar cells. The pristine ITO/g-C 3 N 4 NS thin film-based electrodes were found to have a work function value of approximately 4.43 eV making them a potential candidate as a cathode interface layer for inverted devices. The work function value increased to ∼5.25 eV after UVozone treatment, befitting as an anode interface layer for conventional PSCs. The device with g-C 3 N 4 NS as the interface layer exhibited similar short circuit current density for both inverted and conventional device architecture. This confirms the dual functionality of the g-C 3 N 4 NS thin film in terms of chargeselectivity for efficient carrier collection. The overall power conversion efficiency for the two devices was approximately 5.60% and 6.05%, respectively. The UV-ozone treatment seems to alter the work function of g-C 3 N 4 NS thin film by inducing surface dipoles due to the incorporation of oxygen atoms. This results in switching from electron-extracting behavior to hole extraction. Our results demonstrate the dual functional nature of g-C 3 N 4 NS as an interface layer (CIL/AIL) for solution-processable polymer solar cells.

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The Effect of UV–Ozone Treatment on Structural, Optical, and Dielectric Properties of Thermally Evaporated Graphitic Carbon Nitride Thin Film

Pareek

Waheed

Karak

2022

J. Electron. Mater.

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Structural and optical properties of exfoliated graphene-like carbon nitride into nanosheets and quantum dots

Cited by 11 publications

References 44 publications

Accelerating NADH oxidation and hydrogen production with mid-gap states of nitrogen-rich carbon nitride photocatalyst

Accelerating NADH oxidation and hydrogen production with mid-gap states of nitrogen-rich carbon nitride photocatalyst

Graphitic Carbon Nitride Nanosheets: Dual Functional Charge Selective Cathode/Anode Interface Layer for Polymer Solar Cells

The Effect of UV–Ozone Treatment on Structural, Optical, and Dielectric Properties of Thermally Evaporated Graphitic Carbon Nitride Thin Film

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