The effect of deposition method and thickness dependence on the growth of P3HT for organic photovoltaic devices

Molefe, Fokotsa V.; Mothudi, Bakang M.; Dhlamini, Mokhotjwa S.

doi:10.1016/j.rio.2024.100684

Cited by 2 publications

(2 citation statements)

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“…3a. The peaks at 3485 and 3019 cm − 1 correspond to the OH stretching and C-H bond of hexyl groups, respectively [37,38]. Peaks at 2971 and 2878 cm − 1 arise from symmetric and asymmetric vibrations of the aliphatic C-H bond [39].…”

Section: Resultsmentioning

confidence: 99%

“…Peaks at 2971 and 2878 cm − 1 arise from symmetric and asymmetric vibrations of the aliphatic C-H bond [39]. The peaks at 1725, 1490, and 1369 cm − 1 are attributed to C = O stretching of the ester group, C = C stretching of the symmetric ring, and the C-S thiophene peak of P3HT, respectively [37,38]. Peaks at 1604 and 1221 cm − 1 are associated with carboxylic groups.…”

Section: Resultsmentioning

confidence: 99%

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Enhancing Broadband Absorption and Photocurrent Generation in Carbon Dots via P3HT Integration

Gopi,

Ponnusamy

2024

Preprint

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The growing interest in carbon dots (CDs) arises from their diverse applications and unique properties. This study addresses challenges in CDs for photodetector (PD) applications, specifically surface defects and trap states hindering efficient charge transport. CDs/P3HT composites were prepared to overcome these issues by incorporating CDs in a poly(3-hexylthiophene) (P3HT) matrix. Broad absorption in spectroscopic characterization revealed its utility in fabricating a broadband PD. The CDs/P3HT PD displays a remarkable broadband photoresponse, spanning both UV and visible regions. The CDs and P3HT are effectively combined via non-covalent π-π interactions constituted by their conjugated systems. The π-π interaction increases electron delocalization and facilitates efficient charge transfer due to band alignment at the junction interface. Hence, fabricated CDs/P3HT PD demonstrated enhanced photocurrent compared to pure CDs, exhibiting high responsivity of 6.12×10-3 AW-1 and detectivity of 0.69×109 Jones. This study highlights the potential of CD/P3HT composites for broadband photodetector applications with enhanced photoelectric conversion.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%