Emitter passivation of silicon solar cell via organic coating at room temperature

Shinde, Onkar; Funde, Adinath M.; Agarwal, M. K.; Jadkar, Sandesh; Mahamuni, Shailaja; Dusane, Rajiv O.; Dhere, Neelkanth G.; Ghaisas, S. V.

doi:10.1007/s10854-016-5706-8

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…It is noted that the process of Sieval et al had a 2 h step at 200 °C, which may be sufficient to impact on the bulk lifetime, so this combined with the relatively poor surface recombination velocity shows this is of limited use for characterisation of high bulk lifetimes. A similar high S was also reported for a spin coated oleylamine organic film, however the film was cured at room temperature …”

Section: Types Of Temporary Surface Passivationsupporting

confidence: 80%

Temporary Surface Passivation for Characterisation of Bulk Defects in Silicon: A Review

Grant

Murphy

2017

Physica Rapid Research Ltrs

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Accurate measurements of the bulk minority carrier lifetime in high-quality silicon materials is challenging due to the influence of surface recombination. Conventional surface passivation processes such as thermal oxidation or dielectric deposition often modify the bulk lifetime significantly before measurement. Temporary surface passivation processes at room or very low temperatures enable a more accurate measurement of the true bulk lifetime, as they limit thermal reconfiguration of bulk defects and minimize bulk hydrogenation. In this article we review the state-of-the-art for temporary passivation schemes, including liquid immersion passivation based upon acids, halogen-alcohols and benzyl-alcohols, and thin film passivation usually based on organic substances. We highlight how exceptional surface passivation (surface recombination velocity below 1 cm s À1 ) can be achieved by some types of temporary passivation. From an extensive review of available data in the literature, we find p-type silicon can be best passivated by hydrofluoric acid containing solutions, with superacid-based thin films showing a slight superiority in the n-type case. We review the practical considerations associated with temporary passivation, including sample cleaning, passivation activation, and stability. We highlight examples of how temporary passivation can assist in the development of improved silicon materials for photovoltaic applications, and provide an outlook for the future of the field.

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Section: Types Of Temporary Surface Passivationsupporting

confidence: 80%

Temporary Surface Passivation for Characterisation of Bulk Defects in Silicon: A Review

Grant

Murphy

2017

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

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Aggregation induced emission behavior in oleylamine acetone system and its application to get improved photocurrent from In2S3 quantum dots

Ramya

Nataraj

Krishnan

et al. 2020

Sci Rep

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Blue emission giving nanoscale molecular clusters of Oleylamine–Acetone system was formed by an aging assisted hydrogen bond formation between the interacting molecular systems, at room temperature. The as-formed nanoscale molecular clusters were found to be self-assembled into flower-like aggregates and shifted the emission wavelength to red colour depicting an exciton delocalization in the aggregate system. Interestingly aging process has also produced imine type binding between Oleylamine and Acetone due to the condensation reaction. The experimental conditions and formation mechanism of hydrogen bond assisted Oleylamine–Acetone molecular aggregates and imine bond assisted Oleylamine–Acetone is elaborated in this paper in a systematic experimental approach with suitable theory. Finally we have introduced this Acetone assisted aging process in In2S3 QD system prepared with Oleylamine as functional molecules. It was found that the aging process has detached Oleylamine from QD surface and as a consequence In2S3 QD embedded Oleylamine–Acetone aggregates was obtained. When this In2S3 QD embedded molecular cluster system was used as an active layer in a photo conductor device then a maximum photo current value of the order of milli Ampere was obtained. The surfactant molecules normally inhibit the charge transport between QD systems and as a result it is always problematic to have the functional molecules in the QD based transport devices. Our approach has a solution to this problem and the present paper discusses the outcome of the results in detail.

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Emitter passivation of silicon solar cell via organic coating at room temperature

Cited by 2 publications

References 16 publications

Temporary Surface Passivation for Characterisation of Bulk Defects in Silicon: A Review

Temporary Surface Passivation for Characterisation of Bulk Defects in Silicon: A Review

Aggregation induced emission behavior in oleylamine acetone system and its application to get improved photocurrent from In2S3 quantum dots

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