Photonic post-processing of a multi-material transparent conductive electrode architecture for optoelectronic device integration

Gerlein, Luis Felipe; Benavides-Guerrero, Jaime Alberto; Cloutier, Sylvain G.

doi:10.1039/d3ra07103k

Cited by 2 publications

(1 citation statement)

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“…The AgNWs were photonic cured with 9 pulses at a fluence per pulse of 1.15 J cm −2 resulting in a processing time of 4.7 s. The TiO 2 films were photonic cured with 3 pulses at a fluence per pulse of 6 or 7 J cm −2 resulting in a processing time of 20 s. They found that the TiO 2 film could be crystallized into either anatase or rutile phases by adjusting the pulse fluence between 6 and 7 J cm −2 , respectively. Their final transparent conductor films had a transmittance at 550 nm of 84% with a haze value of 7.7% and a sheet resistance of 18 Ω sq −1 [31]. Junghähnel et al applied photonic curing as a postdeposition method to annealed ITO and IZO films deposited at room temperature on flexible Willow Glass ® (WG) substrates.…”

Section: Transparent Conductorsmentioning

confidence: 99%

Photonic curing for innovative fabrication of flexible metal oxide optoelectronics

Hsu,

Piper

2024

J. Phys. D: Appl. Phys.

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Flexible optoelectronics, based on non-planar substrates, hold promise for diverse applications such as wearables, health monitors, and displays due to their cost-effective manufacturing methods. Despite the superior properties of metal oxides, the challenge of processing them at high temperatures incompatible with plastic substrates necessitates innovative annealing approaches. Photonic curing, which delivers microsecond to millisecond broadband (200 – 1500 nm) light pulses on a sample, emerges as a viable solution. Depending on the optical properties, the targeted film absorbs the radiant energy resulting in rapid heating while the transparent substrate absorbs a minimal amount of light and remains at ambient temperature. The light intensity can be high, but since the light pulse is short, the total energy absorbed by the sample remains low and will not damage the plastic substrate. This perspective explores the innovative application of photonic curing to fabricate flexible metal oxide optoelectronics, including thin-film transistors, metal-insulator-metal devices, solar cells, transparent conductors, and Li batteries, emphasizing the conversion of sol-gel precursors to metal oxides. However, this technique was initially developed for sintering metal nanoparticles to conductive patterns and poses intriguing challenges in explaining its mechanism for metal oxide conversion, especially considering the limited absorption of visible light by most sol-gel precursors. The review delves into UV-induced photochemistry, common flexible metal-oxide optoelectronic components, and non-intuitive distinctions between photonic curing and thermal annealing. By elucidating the distinctive role of photonic curing in overcoming temperature-related challenges and advancing the fabrication of flexible metal oxide optoelectronics, this perspective offers valuable insights that could shape the future of flexible optoelectronics.

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Section: Transparent Conductorsmentioning

confidence: 99%