Air Environment Degradation of a High-Performance Inverted PTB7-Th:PC<sub>70</sub>BM Solar Cell

Lastra, G.; Balderrama, Víctor S.; Resendiz, L.; Pallarès, Josep; Marsal, Lluís F.; Cabrera, V.; Estrada, M.

doi:10.1109/jphotov.2019.2892108

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…The energy level of the PEDOT:PSS is very close to the HOMO of the P3HT, hence offers very efficient hole collection in P3HT:PCBM OSCs. However, due to the acidic nature of PEDOT:PSS, it is found to be detrimental to the underlying ITO layer, as well as the P3HT:PCBM active layer, which results in the poor stability of the OSC [65][66][67][68]. Moreover, having high transparency, PEDOT:PSS absorbs around 15%-20% of the solar radiation in the visible spectrum [65,66], thus reducing the photon generation in the active layer results in low J SC .…”

Section: Effect Of Charge Transport Layer In Oscmentioning

confidence: 99%

“…The morphological and optical characterization of the fabricated devices has been performed on P3HT:PCBM films. It has been shown that, in the presence of oxygen and water vapor, the organic materials became unstable when exposed to atmospheric conditions [66][67][68]. The diffusion of oxygen into the P3HT:PCBM causes oxidation of PCBM which reduces the ability to absorb the light [66,69,70].…”

Section: Thermal Stability Of Oscmentioning

confidence: 99%

“…Heat is the major factor that affects the OSC's output during on-field operations [66,67,71,73,74]. Due to continuous illumination of the sun, the operating temperature of the solar cell is normally higher when working in the field.…”

Section: Thermal Stability Of Oscmentioning

confidence: 99%

“…Due to continuous illumination of the sun, the operating temperature of the solar cell is normally higher when working in the field. Heating results in the diffusion of metals and transport materials, thereby reducing the stability of the OSCs by changing the energy levels at the interface [66,67,73]. In conventional OSCs, poly 3,4-ethylenedioxythiophene/poly styrene-sulfonate (PEDOT:PSS) is most widely used as the HTL.…”

Section: Thermal Stability Of Oscmentioning

confidence: 99%

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Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Ghosekar

Patil

2021

Semicond. Sci. Technol.

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Due to their low production costs, small weight, printability, solution processing, and the possibility of using flexible substrates, organic solar cells (OSCs) exhibit strong potential to be used in future solar cell technology. Major specifications for the commercialization of OSCs are the long life span of OSC devices, enhanced environmental stability and a sufficiently high power conversion efficiency (PCE). The development of low energy gap organic polymers, transport materials and multi-layer system architecture has been effective in achieving higher PCE. However, overcoming environmental stability and sustaining a longer life span are a major challenge. The instability of OSCs is the dynamic mechanism, mostly induced due to the combined impact of oxygen, incident light, and ambient, as well as processing, temperature. Studies have reported that thermal annealing of the active layer tends to a shift in the phase morphology, which typically occurs either because of the vertical phase separation or because of the process of donor–acceptor phase segregation. In this paper, various factors that affect the performance of the OSC have been comprehensively studied. Factors such as thermal stress, vertical phase segregation, material composition and tradeoff between thickness and light absorption have been discussed. This paper mainly reviews the measures carried out to improve the efficiency of conventional polymer-fullerene-based bulk-heterojunction OSCs and reports the different techniques to address these issues.

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Section: Effect Of Charge Transport Layer In Oscmentioning

confidence: 99%

Section: Thermal Stability Of Oscmentioning

confidence: 99%

Section: Thermal Stability Of Oscmentioning

confidence: 99%

Section: Thermal Stability Of Oscmentioning

confidence: 99%

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Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Ghosekar

Patil

2021

Semicond. Sci. Technol.

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“…Several buffer layers combined with a low work function metal electrodes have been reported to improve the performance and lifetime of organic solar cells. In iOSCs, as hole transport layer (HTL) are used commonly vanadium oxide (V 2 O 5 ) [6], [7], molybdenum oxide (MoO 3 ) [8], [9] and nickel oxide (NiO) [10], [11]. As electron transport layer (ETL) are used commonly PFN [12], [13], zinc oxide (ZnO) [14], [15] and titanium oxide (TiO x ) [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Solution-Processed Small Molecule Inverted Solar Cells: Impact of Electron Transport Layers

Ramirez-Como

Balderrama

Sánchez

et al. 2022

IEEE J. Electron Devices Soc.

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In this work, the use of poly [(9,9-bis (30-(N,N-dimethylamino) propyl) -2,7-fluorene)alt-2,7-(9,9-dioctylfluorene) (PFN) as electron transport layer (ETL) in inverted small molecule solar cells (SM-iOSCs) is analyzed. The optical and electrical characteristics obtained are compared with those obtained for similar SM-iOSCs where the ETL was zinc oxide. The p-DTS(FBTTh 2 ) 2 and PC 70 BM materials are used as donor and acceptor in the bulk heterojunction active layer, respectively for all devices. The photovoltaic devices exhibited a power conversion efficiency of 6.75% under 1 sun illumination. Impedance measurements were used to understand the causes that dominate the performance of the devices. We found that the loss resistance is governed by the PFN layer, which results in a lower fill factor value. Studies of atomic force microscopy, external quantum efficiency, and absorption UV-vis on the active layer have been performed to understand the effects of the charge transport dynamics on the performance of the devices.INDEX TERMS Buffer layers, dependence light intensity, electron transport layer, impedance spectroscopy, organic solar cells, p-DTS(FBTTh 2 ) 2 :PC 70 BM solar cells, PFN ETL, Solution-processed small molecule, ZnO ETL.

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A test of meta-heuristic algorithms for parameter extraction of next-generation solar cells with S-shaped current–voltage curves

Olikh

2024

Materials Science and Engineering: B

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Air Environment Degradation of a High-Performance Inverted PTB7-Th:PC₇₀BM Solar Cell

Cited by 9 publications

References 30 publications

Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Solution-Processed Small Molecule Inverted Solar Cells: Impact of Electron Transport Layers

A test of meta-heuristic algorithms for parameter extraction of next-generation solar cells with S-shaped current–voltage curves

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Air Environment Degradation of a High-Performance Inverted PTB7-Th:PC70BM Solar Cell

Cited by 9 publications

References 30 publications

Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Review on performance analysis of P3HT:PCBM-based bulk heterojunction organic solar cells

Solution-Processed Small Molecule Inverted Solar Cells: Impact of Electron Transport Layers

A test of meta-heuristic algorithms for parameter extraction of next-generation solar cells with S-shaped current–voltage curves

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Air Environment Degradation of a High-Performance Inverted PTB7-Th:PC₇₀BM Solar Cell