Solution processed transition metal oxide anode buffer layers for efficiency and stability enhancement of polymer solar cells

Ameen, Mohammad; Shamjid, P.; Abhijith, T.; Reddy, V.S.

doi:10.1016/j.optmat.2017.11.006

Cited by 23 publications

(12 citation statements)

References 60 publications

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“…In addition to the light‐induced molecular change, recent studies indicate that the interlayer can introduce additional degradation pathways to NFA through photocatalytic reactions. [ 185–191 ] It was found that the vinyl group of enone in ITIC can undergo a radical addition reaction with the hydroxyl radicals on the ZnO surface (typical defects under UV light irradiation for low‐temperature and solution processed ZnO), and this ITIC radical intermediate can further decompose to other fragments or attack the enone group of another ITIC molecule to form dimerized ITIC (see evidence in Figure 11 a). Such photocatalytic reaction can retard electron transport and lead to significant local charge accumulation and recombination at the ZnO interface, resulting in reduced FF and V OC and severe burn‐in degradation under 1 sun light soaking with the PCE of encapsulated PBDB‐T:ITIC OSCs losing more than 30% of their initial value within the first 50 h. [ 192 ] This ZnO assisted photocatalytic reaction appears to be a general cause for the severe burn‐in degradation of NFA OSCs, since cutting off the ZnO/active layer contact can rectify the overall device stability.…”

Section: Toward Superior Stability Of Nfa‐based Oscsmentioning

confidence: 99%

Recent Progress and Challenges toward Highly Stable Nonfullerene Acceptor‐Based Organic Solar Cells

Wang

Lee

Hou

et al. 2020

Advanced Energy Materials

196

178

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Organic solar cells (OSCs) based on nonfullerene acceptors (NFAs) have made significant breakthrough in their device performance, now achieving a power conversion efficiency of ≈18% for single junction devices, driven by the rapid development in their molecular design and device engineering in recent years. However, achieving long‐term stability remains a major challenge to overcome for their commercialization, due in large part to the current lack of understanding of their degradation mechanisms as well as the design rules for enhancing their stability. In this review, the recent progress in understanding the degradation mechanisms and enhancing the stability of high performance NFA‐based OSCs is a specific focus. First, an overview of the recent advances in the molecular design and device engineering of several classes of high performance NFA‐based OSCs for various targeted applications is provided, before presenting a critical review of the different degradation mechanisms identified through photochemical‐, photo‐, and morphological degradation pathways. Potential strategies to address these degradation mechanisms for further stability enhancement, from molecular design, interfacial engineering, and morphology control perspectives, are also discussed. Finally, an outlook is given highlighting the remaining key challenges toward achieving the long‐term stability of NFA‐OSCs.

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Section: Toward Superior Stability Of Nfa‐based Oscsmentioning

confidence: 99%

Recent Progress and Challenges toward Highly Stable Nonfullerene Acceptor‐Based Organic Solar Cells

Wang

Lee

Hou

et al. 2020

Advanced Energy Materials

196

178

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“…In view of this, using it as the anode buffer layer (ABL) is favorable for extracting holes. By applying V 2 O 5 in P3HT:PCBM-based conventional OSC, the stability of devices is enhanced because of less degradation of the active layer . Meanwhile, in the inverted OSCs with the same active layer as the former, Muhammad et al found that the V 2 O 5 layer annealed at 165 °C for 5 min achieved the highest PCE of 3.92% .…”

Section: Inorganic Materialsmentioning

confidence: 99%

Materials for Interfaces in Organic Solar Cells and Photodetectors

Chen

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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Interface engineering is very important to the high performance of organic optoelectronic devices that are commonly composed of multilayer thin solid films. Interfacial materials are particularly crucial for interface engineering, and a variety of materials have been employed at the interface to accomplish various different functions. This Review summarizes various materials for the interfaces and some of the latest progress in organic solar cells (OSCs) and organic photodetectors (OPDs).

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“…In recent years, a new generation of AILs has been introduced using materials such as metal oxides, [8][9][10] conducting polymers, 11 graphene-based AILs, 12 conductive polyelectrolytes, 13 and cross-linkable materials. 14 Semiconductor metal oxide interlayers can have consistent long-term stability in high-efficiency OSCs.…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl pyrrolidone)-modified metal oxide anode interlayers for stable organic solar cells

et al. 2020

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A new generation of anode interlayers (AILs) has been introduced in recent years for improving the efficiency and stability of organic solar cell (OSC) devices. Electrode interlayer modification is a simple and effective way of enhancing OSC device performance. We used poly(vinyl pyrrolidone) (PVP) as an AIL modifier to alter molybdenum trioxide (MoO 3) and vanadium pentoxide (V 2 O 5) AILs in OSC devices and compared them with pure metal oxide AILs. Using this modification, average power conversion efficiencies were raised from 5.2% AE 0.4% to 6.0% AE 0.3% for OSCs with MoO 3-based AILs, and from 6.2% AE 0.1% to 6.8% AE 0.3% for OSCs with V 2 O 5-based AILs. Moreover, the PVP-metal oxide AILs also improved the overall device quality, producing a nanotextured morphology with good optical properties and favorable chemical composition. Beneficial wetting properties for interfacial adhesion between anode and active layer are observed using contact angle measurements. Overall, devices with PVP-modified metal oxide AILs showed promising results with greater device stability compared to pure metal oxide AIL-based OSC devices.

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Solution processed transition metal oxide anode buffer layers for efficiency and stability enhancement of polymer solar cells

Cited by 23 publications

References 60 publications

Recent Progress and Challenges toward Highly Stable Nonfullerene Acceptor‐Based Organic Solar Cells

Recent Progress and Challenges toward Highly Stable Nonfullerene Acceptor‐Based Organic Solar Cells

Materials for Interfaces in Organic Solar Cells and Photodetectors

Poly(vinyl pyrrolidone)-modified metal oxide anode interlayers for stable organic solar cells

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