Studies on One‐Step‐Synthesized Hydrated Vanadium Pentoxide for Efficient Hole Transport in Organic Photovoltaics

Ravi, Remya; Deb, Biswapriya

doi:10.1002/ente.201901323

Cited by 6 publications

(9 citation statements)

References 47 publications

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“…Vishnumurthy et al reported that V 2 O 5 HTL optimized the efficiency of thienothiophene-diketopyrrolopyrole-based OSCs by up to 1.02% [ 158 ]. Remya et al prepared an efficient hole-transport/electron-blocking hydrated vanadium oxide (HVO) from V 2 O 5 powder with hydrogen peroxide [ 159 ]. In the P3HT:PC 61 BM and PBDTT-FTTE:PC 71 BM BHJ cells, HVO HTL performance was superior to PEDOT:PSS, obtaining 56% enhancement (7.12–11.14%) in the PCE for the PBDTT-FTTE:PC 71 BM-based inverted OSC with a lower degradation of 1.4% over 20 weeks.…”

Section: Hole-transporting Materials As Htls In Oscsmentioning

confidence: 99%

Recent Advances in Hole-Transporting Layers for Organic Solar Cells

et al. 2022

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Global energy demand is increasing; thus, emerging renewable energy sources, such as organic solar cells (OSCs), are fundamental to mitigate the negative effects of fuel consumption. Within OSC’s advancements, the development of efficient and stable interface materials is essential to achieve high performance, long-term stability, low costs, and broader applicability. Inorganic and nanocarbon-based materials show a suitable work function, tunable optical/electronic properties, stability to the presence of moisture, and facile solution processing, while organic conducting polymers and small molecules have some advantages such as fast and low-cost production, solution process, low energy payback time, light weight, and less adverse environmental impact, making them attractive as hole transporting layers (HTLs) for OSCs. This review looked at the recent progress in metal oxides, metal sulfides, nanocarbon materials, conducting polymers, and small organic molecules as HTLs in OSCs over the past five years. The endeavors in research and technology have optimized the preparation and deposition methods of HTLs. Strategies of doping, composite/hybrid formation, and modifications have also tuned the optical/electrical properties of these materials as HTLs to obtain efficient and stable OSCs. We highlighted the impact of structure, composition, and processing conditions of inorganic and organic materials as HTLs in conventional and inverted OSCs.

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Section: Hole-transporting Materials As Htls In Oscsmentioning

confidence: 99%

Recent Advances in Hole-Transporting Layers for Organic Solar Cells

et al. 2022

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“…The correlation of the above results provides evidence of the hydrated nature of the material. A shift was measured in the CV curve of HVO compared to bare V 2 O 5 , and this might be due to the interaction of the redox process of V 2 O 5 and the presence of water molecules; the curve is shown in Figure S2b. The calculated HOMO energy level for HVO was 5.10 eV; the lowest unoccupied molecular orbital (LUMO) could also be measured by the addition of the optical band gap ( E opt g ) obtained from the UV–vis absorption spectra of HVO in the DI water solution (Figure S2c).…”

Section: Resultsmentioning

confidence: 99%

“…Peaks (001), (003), (004), and (005) (JCPDS #040-1296) expressing a particular direction of orientation are shown in Figure a. The V 2 O 5 · n H 2 O film retains the hydrate and layered phase on the ITO substrate, and the broadness of the peaks is attributed to the stronger crystalline indication . The water molecules’ presence in the HVO matrix was investigated by TGA (as shown in Figure b) using the A-Torrcca formula .…”

Section: Resultsmentioning

confidence: 99%

“…The HRTEM image of HVO shows a nanoribbon-like structure, as shown in Figure S2a in the Supporting Information; this kind of structure is helpful as HTL for the application of OSC devices. 52 The Raman spectra show the vibrational modes corresponding to the lattice vibrations of 262.58, 348.15, 411.76, 504.87, 706.01, 880.25, 970.80, and 1020.16 cm −1 . The reported Raman bands for polycrystalline V 2 O 5 present slight shifts in their positions (Figure 2c).…”

Section: Characterization Of Hvo Htlmentioning

confidence: 99%

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Facile Approach for Efficient Non-Fullerene-Based Binary and Ternary Organic Solar Cells Using Hydrated Vanadium Pentoxide as a Hole Transport Layer

Dahiya

Suthar

Singh

et al. 2023

ACS Appl. Energy Mater.

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Although the power conversion efficiency (PCE) of single-junction organic solar cells (OSCs) has exceeded more than 19%, the biggest obstacle to the commercial application of OSCs is the low device stability. Herein, this work reports the development of hydrated vanadium pentoxide (HVO) as a hole transport layer (HTL) with outstanding hole-extracting capabilities by a simple synthesis process and its use in the non-fullerene-acceptor-based binary and ternary OSCs. OSCs based on PM6:BTP-eC9 using an indium tin oxide/hydrated vanadium pentoxide (ITO/HVO) anode exhibit a maximum PCE of 13.33%, which is higher than ITO/poly(3,4-ethylene dioxythiophene):(polystyrene sulfonate) (PEDOT:PSS) (12.09%). Additionally, ternary (with an active layer of PM6:BTP-eC9:PC 71 BM) devices were also fabricated to analyze the impact of HVO HTL and achieved a PCE of 14.34%. The higher PCE is found to originate from the much higher work function (WF) of ITO/HVO than ITO/PEDOT:PSS. Furthermore, to replace a sophisticated thermal evaporation technique with a solution-processed, we fabricated inverted devices with HVO instead of control MoO 3 HTL. The highest occupied molecular orbital (HOMO) energy level of HVO is nearly equal to MoO 3 , and the device based on HVO attributed a PCE of 7.47%, which is higher than MoO 3 (6.70%)-based devices. This work provides a low-cost, highly efficient, and solution-processed HTL material for OSCs with long-term air stability.

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“…Ravi et al introduced a straightforward one-step technique of synthesis a hydrate vanadium pentoxide (HVO) as HTL in OSCs . The solution-processed HVO phase have excellent hole transport properties.…”

Section: Classes Of Interlayer Materialsmentioning

confidence: 99%

Recent Advances in Organic and Inorganic Hole and Electron Transport Layers for Organic Solar Cells: Basic Concept and Device Performance

Dahiya

Suthar

Khandelwal

et al. 2022

ACS Appl. Electron. Mater.

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The emergence of nonfullerene small-molecule acceptors (NFSMA) with the advantages of synthetic versatility, high absorption coefficient in wide wavelength range, and high thermal stability has attained the power conversion efficiency (PCE) exceeding 19% for resulted organic solar cells (OSCs) with the optimization of interface engineering and active layer morphology. Interfacial layers including both hole transporting layer (HTL) and electron transporting layer (ETL) are equally important in the OSCs for facilitating electron and hole extraction from the bulk heterojunction (BHJ) photoactive layer by the respective electrodes. In this Review, we summarize the recent progress in the materials used as HTL and ETL in conventional and inverted OSCs on the basis of their effect on the PCE. Finally, the prospects of HTL and ETL materials for NFSMA-OSCs will be provided.

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Studies on One‐Step‐Synthesized Hydrated Vanadium Pentoxide for Efficient Hole Transport in Organic Photovoltaics

Cited by 6 publications

References 47 publications

Recent Advances in Hole-Transporting Layers for Organic Solar Cells

Recent Advances in Hole-Transporting Layers for Organic Solar Cells

Facile Approach for Efficient Non-Fullerene-Based Binary and Ternary Organic Solar Cells Using Hydrated Vanadium Pentoxide as a Hole Transport Layer

Recent Advances in Organic and Inorganic Hole and Electron Transport Layers for Organic Solar Cells: Basic Concept and Device Performance

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