Tin-doped ZnO electron transport layer to improve performance of P3HT-based organic solar cells

Alebachew, B. A.; Waketola, Alemayehu G.; Goosen, Neill J.; Desissa, Temesgen Debelo; Tegegne, Newayemedhin A.

doi:10.1007/s10971-023-06179-7

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Doping ZnO with metals such as lithium (Li), magnesium (Mg), and tin (Sn) yields remarkable improvements in electron mobility and energy-level alignment. As a result, electron transport and collection are noticeably enhanced. − Nonconjugated polymers such as polyethylenimine (PEI) and ethoxylated polyethylenimine (PEIE) have been recognized as promising candidates for modifying the surface of ZnO because these polymers offer enhanced photostability. , Recently, self-assembled monolayers (SAMs) have emerged as a promising strategy for modifying metal and metal oxide surfaces in OSCs. , The main effect caused by applying SAMs to metal-oxide surfaces is the formation of interfacial dipoles, which can assist with electron extraction and enhance performance. SAMs have been successfully employed as interface modifiers between the metal oxide and active layers in OSC devices, achieving a record PCE of 18.4% and an extrapolated lifetime of 20 years .…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Monolayer Engineered ZnO Electron Transport Layer to Improve the Photostability of Organic Solar Cells

Gebremariam,

Hone,

Negash

et al. 2024

Energy Fuels

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The degradation of organic solar cells (OSCs) can occur in any of the layers, underlining the importance of each layer in prolonging their lifetime. To enhance the performance and stability of inverted OSCs (i-OSCs), interfacial modification has been employed. In this context, two self-assembled monolayers (SAMs), namely, octadecanthiol (ODT) and octadecyltrimethoxysilane (OTMS), were utilized to effectively passivate typical surface defects in the ZnO electron transport layer (ETL). The SAM-treated ZnO films were found to be more hydrophobic, which reduced surface defects produced by adsorbed oxygen and hydroxyl groups. Consequently, the power conversion efficiency (PCE) of the i-OSCs comprising an indacenodithieno[3,2-b]thiophene-alt-5,5-di(thiophen-2-yl)-2,2-bithiazole (PIDTT-DTBTz) donor blended with [6,6]-phenyl-C 71 -butyric acid methyl ester (PC 70 BM) acceptor increased from 4.20% in pristine ZnO-to 5.01 and 5.37% in ODTand OTMS-treated ZnO-based devices, respectively. In addition, the photostability of the device substantially improved. Hence, devices based on ZnO treated with ODT and OTMS kept 76 and 89% of their initial PCE, respectively, while pristine ZnO-based devices retained only 66% of the initial PCE after 48 h of irradiation. The improved PCE and extended lifetime of the i-OSCs can be attributed to enhanced charge transfer, the reduction in both bimolecular and trap-assisted recombination processes, and the enhanced interface between the ETL and the active layer. Moreover, it has been observed that the OTMS-treated ZnO ETL-based i-OSC offers better stability and more efficient devices compared to the ODT-treated ZnO ETL-based devices. This can be attributed to the favorable dipole moment generated by the increased electrostatic potential at the anchor group, which promotes improved device performance.

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Section: Introductionmentioning

confidence: 99%

Self-Assembled Monolayer Engineered ZnO Electron Transport Layer to Improve the Photostability of Organic Solar Cells

Gebremariam,

Hone,

Negash

et al. 2024

Energy Fuels

Self Cite

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Zinc Oxide Nanorods/Reduced Graphene Oxide for Schottky Junction Ultraviolet Photodetector Application

Majumder,

Dhar,

Chakraborty

et al. 2024

Nano LIFE

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Hybrid Ultraviolet photodetector (UVPD) was fabricated by depositing reduced graphene oxide on zinc oxide nanorods (ZnO NRs) array-coated FTO glass. Structural and optical properties of ZnO NRs were studied using TEM, SEM, XRD and UV–Vis spectroscopy. Graphene oxide (GO) sheets were synthesized from graphite powder using the modified Hummer’s method. rGO films were obtained after illuminating the GO in UV radiation. The formation of rGO and GO films was studied using AFM surface topography and UV–Vis spectroscopy. External quantum efficiency (EQE), responsivity and transient response of rGO/ZnO NR-based UV photodetector were studied in detail. The photodetector device shows very high EQE ([Formula: see text]45 257%) and responsivity (R[Formula: see text]130 A/W).

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Tin-doped ZnO electron transport layer to improve performance of P3HT-based organic solar cells

Cited by 2 publications

References 31 publications

Self-Assembled Monolayer Engineered ZnO Electron Transport Layer to Improve the Photostability of Organic Solar Cells

Self-Assembled Monolayer Engineered ZnO Electron Transport Layer to Improve the Photostability of Organic Solar Cells

Zinc Oxide Nanorods/Reduced Graphene Oxide for Schottky Junction Ultraviolet Photodetector Application

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