Enhanced efficiency of organic solar cells by using ZnO as an electron-transport layer

Ullah, Irfan; Shah, Said Karim; Wali, Sartaj; Hayat, Khizar; Khattak, Shaukat Ali; Khan, Aurangzeb

doi:10.1088/2053-1591/aa9dc9

Cited by 29 publications

(12 citation statements)

References 26 publications

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“…At variance with direct conventional architecture, where ITO is a hole collector, the photo-generated charge carriers flow through the external circuit from the transparent electrode, indium tin oxide (ITO) to the hole collecting MoO 3 /Ag contact, a structure known as a inverted polymeric solar cell. The metals oxide ZnO layers 10,17 were used as electron transporting layers and were prepared by spin coating from sol-gel process. Because of the high transparency in the visible and near infrared, ZnO can be used as an interface modification layer at the ITO surface in the inverted structure of OPV devices.…”

Section: Introductionmentioning

confidence: 99%

Efficient Method of Fabricating Polymeric Solar Cells in Multilayered Configuration Using Electrospray

Shah

Gunnella

2019

Journal of Elec Materi

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Electrospray deposition (ESD) for the fabrication of multilayered (ML) bulk heterojunction polymeric solar cells via direct/inverted configurations was investigated. The active layer heterojunction (P3HT/PCBM) is deposited both in single and multilayered architectures. In ML configuration, the P3HT/ PCBM blend film is sandwiched between thin donor (P3HT) and acceptor (PCBM) layers. In ZnO-based inverted solar cells, ZnO film synthesized by sol-gel process was deposited on ITO substrate using spin coatinng. Solar cells were fabricated via ESD and spin coating and the device's performance parameters were compared. Higher efficiency was obtained in the case of (ML) ESD device (direct structure). Post thermal treatment showed that ESD devices exhibit a power conversion efficiency (PCE) of 1.85% ML and 1.64% SL in direct structure while in the case of inverted structure PCEs of 1.30% ML and 0.82% SL were obtained as compared to 1.64% from the spin coated device at 120°C. The ML ESD devices have shown an overall efficiency enhancement of 13% (direct) and 58% (inverted) over the single layer (SL) ESD devices. The enhanced performance in ML devices is because there is a spatially uninterrupted pathway to the charge carrier transport towards their respective electrodes.

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Section: Introductionmentioning

confidence: 99%

Efficient Method of Fabricating Polymeric Solar Cells in Multilayered Configuration Using Electrospray

Shah

Gunnella

2019

Journal of Elec Materi

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“…That is why the potential of using MoO 3 among TCOs with high work function in designing high-performance optoelectronic devices stands out. The use of MoO 3 , which provides a hole injection into active layers and acts as an anti-reflective layer for reflective metals such as Ag and Au, which have a high refractive index 43 , 44 , as HTL has become a well-established approach in inverted structures 10 , 45 – 47 . For optimal electrical performance, the thickness of MoO 3 affected the electrical parameters of the devices is preferred around 10 nm 28 .…”

Section: Resultsmentioning

confidence: 99%

Functional optical design of thickness-optimized transparent conductive dielectric-metal-dielectric plasmonic structure

Çetinkaya

Çokduygulular

Güzelçimen

et al. 2022

Sci Rep

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Dielectric/metal/dielectric plasmonic transparent structures play an important role in tailoring the high-optical performance of various optoelectronic devices. Though these structures are in significant demand in applications, including modification of the optical properties, average visible transmittance (AVT) and colour render index (CRI) and correlated colour temperature (CCT), obtaining optimal ones require precise thickness optimization. The overall objective of this study is the estimation of the optimal design concept of MoO3/Ag/WO3 (10/dAg/dWO3 nm) plasmonic structure. To explore the proper use in optoelectronic devices, we are motivated to conduct a rigorous optical evaluation on the thickness of layers. Having calculated optical characteristics and achieved the highest AVT of 97.3% for dAg = 4 nm and dWO3 = 6 nm by the transfer matrix method, it is quite possible to offer the potential of the structure acting as a transparent contact. Notably, the colour coordinates of the structure are x = 0.3110 and y = 0.3271, namely, it attributes very close to the Planckian locus. This superior colour performance displays that MoO3/Ag/WO3 shall undergo rapid development in neutral-colour windows and LED technologies. Structure with dAg = 6 nm and dWO3 = 16 nm exhibits the highest CRI of 98.58, thus identifying an optimal structure that can be integrated into LED lighting applications and imaging technologies. Besides the colour of structure with dAg = 4 nm and dWO3 = 8 nm is equal for D65 Standard Illuminant, the study reports that the range of CCTs are between 5000 and 6500 K. This optimization makes the structure employable as a near-daylight broadband illuminant. The study emphasizes that optimal MoO3/Ag/WO3 plasmonic structures can be used effectively to boost optoelectronic devices' performance.

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“…, tungsten oxide (WO 3 ), polyethyleneimine ethoxylated-modified ZnO, and 2,9-bis[3-(dimethyloxidoamino)propyl]anthra[2,1,9- def :6,5,10- d ′ e ′ f ′]diisoquinoline-1,3,8,10(2 H ,9 H )-tetrone (PDINO), have been adopted owing to their enhanced band alignment for dim illumination-optimized charge selectivity and reduced recombination. 27–31…”

Section: Introductionmentioning

confidence: 99%

“…In addition, charge-collecting interlayers, e.g., tungsten oxide (WO 3 ), polyethyleneimine ethoxylated-modied ZnO, and 2,9-bis [3-(dimethyloxidoamino)propyl]anthra[2,1,9def:6,5,10-d 0 e 0 f 0 ]diisoquinoline-1,3,8,10(2H,9H)-tetrone (PDINO), have been adopted owing to their enhanced band alignment for dim illumination-optimized charge selectivity and reduced recombination. [27][28][29][30][31] In this study, we propose a novel but simple method that leverages altered resistance effects to signicantly improve the indoor performance of OPVs. To this end, we introduced a transfer-laminated homojunction hole-transport layer (HTL).…”

Section: Introductionmentioning

confidence: 99%

Drastic performance improvement of indoor organic photovoltaics using a novel laminated homojunction hole-transport layer

et al. 2022

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Enhanced efficiency of organic solar cells by using ZnO as an electron-transport layer

Cited by 29 publications

References 26 publications

Efficient Method of Fabricating Polymeric Solar Cells in Multilayered Configuration Using Electrospray

Efficient Method of Fabricating Polymeric Solar Cells in Multilayered Configuration Using Electrospray

Functional optical design of thickness-optimized transparent conductive dielectric-metal-dielectric plasmonic structure

Drastic performance improvement of indoor organic photovoltaics using a novel laminated homojunction hole-transport layer

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