The interplay between device’s and material’s properties in determining solar cells’ performance

Bitton, Sapir; Fadul, Hela; Liraz, Dan; Tessler, Nir

doi:10.1117/12.2637315

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Previous works employed the physical vapor deposition and chemical deposition method, whereas our experiments utilized the less expensive and less complex spray deposition technique. Authors reported limited mobility due to small channel lengths, challenging to achieve without sophisticated fabrication processes (31)(32)(33)(34). In contrast, our approach incorporated longer channel lengths, facilitating easier fabrication, and resulting in higher observed mobility values.…”

Section: Performance Comparisonmentioning

confidence: 97%

Flexible Organic Electrochemical Transistor Based on Conjugated Conducting Polymers

Riam,

Islam,

Sarker

et al. 2024

ECS Trans.

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In this work, we have fabricated a side-gated organic electrochemical transistor (OECT) where the source, drain, and gate terminals are screen-printed on a flexible polyethylene terephthalate substrate through a scalable screen-printing process. The semiconducting channel material is made of polyethylene dioxythiophene: polystyrene sulfonate (PEDOT: PSS), applied via spray coating. The OECT operates by volumetric gating of the channel through a gel electrolyte containing poly sodium 4-styrene sulfonate, transitioning highly conductive PEDOT+ to PEDOT0 through de-doping, biased by a positive gate voltage. Additionally, the OECT displayed a transconductance (gm) of 62.5 µA/V, mobility (µ) of 6.6×106 cm2 / Vs, and a threshold voltage (Vth) of -0.39 V, with the ON/OFF ratio being relatively low at 33.2. The repeatability was confirmed through the fabrication of three devices that exhibited nearly identical behavior. Future work emphasizes functionalizing the electrolyte to detect biomolecules such as glucose, pH, and ion species.

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Section: Performance Comparisonmentioning

confidence: 97%

Flexible Organic Electrochemical Transistor Based on Conjugated Conducting Polymers

Riam,

Islam,

Sarker

et al. 2024

ECS Trans.

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Direct correlation between the built-in potential and the power conversion efficiency of NFA organic solar cells

Fadool,

Tessler

2023

Applied Physics Letters

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While it is known that too low built-in potential is detrimental to cells' performance, there is no consensus regarding the importance of maximizing the internal electric field or the built-in potential for achieving the highest power conversion efficiency of non-fullerene acceptor (NFA) organic solar cells. We use one of the prototypical NFA bulk heterojunction solar cells to show a direct correlation between the built-in potential, the open circuit voltage, the fill factor, and the device's efficiency. This is achieved using statistical analysis of devices made of two different cathodes (Ag, Mg) and a simple, intuitive model for the solar cell's current–voltage characteristics. Designing device structures with enhanced built-in potential (internal electric field) is crucial for surpassing the 20% efficiency limit.

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The interplay between device’s and material’s properties in determining solar cells’ performance

Cited by 2 publications

References 33 publications

Flexible Organic Electrochemical Transistor Based on Conjugated Conducting Polymers

Flexible Organic Electrochemical Transistor Based on Conjugated Conducting Polymers

Direct correlation between the built-in potential and the power conversion efficiency of NFA organic solar cells

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