Interface management of silicon-nanowire based hybrid solar cells through facile solution-processed oxidation

Shih Hsiu Chen; Ta Cheng Wei; Tsung Yen Wu; Chia Yun Chen

doi:10.1016/j.matlet.2021.130967

Interface management of silicon-nanowire based hybrid solar cells through facile solution-processed oxidation

Shih Hsiu Chen, Ta Cheng Wei, Tsung Yen Wu, Chia Yun Chen

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Surface recombination of photogenerated carriers turned to be critical issues against the realization of high-performance nanowire-based solar cells. To overcome it, the strategy toward passivating nanowire surfaces was essential where the improvement of minority carrier lifetime was identified in recent years; instead, the examinations of optical management as well as charge-transfer resistance at heterojunction were still limited. In this study, we herein investigated the facile, inexpensive and reliable HNO₃-based chemical passivation that directly introduced SiO_x coating on Si nanowires. By adjusting the oxidation durations, the cell performance exhibited the improved conversion efficiency with more than 39% of efficiency enhancement than reference cells. Impacts of light harvesting and charge separation characteristics on cell performances were in-depth envisioned.

Original language	English
Article number	130967
Journal	Materials Letters
Volume	307
DOIs	https://doi.org/10.1016/j.matlet.2021.130967
Publication status	Published - 2022 Jan 15

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2021.130967

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title = "Interface management of silicon-nanowire based hybrid solar cells through facile solution-processed oxidation",

abstract = "Surface recombination of photogenerated carriers turned to be critical issues against the realization of high-performance nanowire-based solar cells. To overcome it, the strategy toward passivating nanowire surfaces was essential where the improvement of minority carrier lifetime was identified in recent years; instead, the examinations of optical management as well as charge-transfer resistance at heterojunction were still limited. In this study, we herein investigated the facile, inexpensive and reliable HNO3-based chemical passivation that directly introduced SiOx coating on Si nanowires. By adjusting the oxidation durations, the cell performance exhibited the improved conversion efficiency with more than 39% of efficiency enhancement than reference cells. Impacts of light harvesting and charge separation characteristics on cell performances were in-depth envisioned.",

author = "Chen, {Shih Hsiu} and Wei, {Ta Cheng} and Wu, {Tsung Yen} and Chen, {Chia Yun}",

note = "Funding Information: This work was supported by Ministry of Science and Technology of Taiwan (MOST 107-2221-E-006-013-MY3) and (MOST 110-2223-E-006 -003 -MY3). The authors greatly thank the Core Facility Center, National Cheng Kung University with the facilities provided for conducting material characterizations. Funding Information: This work was supported by Ministry of Science and Technology of Taiwan (MOST 107-2221-E-006-013-MY3 ) and (MOST 110-2223-E-006 -003 -MY3 ). The authors greatly thank the Core Facility Center, National Cheng Kung University with the facilities provided for conducting material characterizations. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = jan,

day = "15",

doi = "10.1016/j.matlet.2021.130967",

language = "English",

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T1 - Interface management of silicon-nanowire based hybrid solar cells through facile solution-processed oxidation

AU - Chen, Shih Hsiu

AU - Wei, Ta Cheng

AU - Wu, Tsung Yen

AU - Chen, Chia Yun

N1 - Funding Information: This work was supported by Ministry of Science and Technology of Taiwan (MOST 107-2221-E-006-013-MY3) and (MOST 110-2223-E-006 -003 -MY3). The authors greatly thank the Core Facility Center, National Cheng Kung University with the facilities provided for conducting material characterizations. Funding Information: This work was supported by Ministry of Science and Technology of Taiwan (MOST 107-2221-E-006-013-MY3 ) and (MOST 110-2223-E-006 -003 -MY3 ). The authors greatly thank the Core Facility Center, National Cheng Kung University with the facilities provided for conducting material characterizations. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/1/15

Y1 - 2022/1/15

N2 - Surface recombination of photogenerated carriers turned to be critical issues against the realization of high-performance nanowire-based solar cells. To overcome it, the strategy toward passivating nanowire surfaces was essential where the improvement of minority carrier lifetime was identified in recent years; instead, the examinations of optical management as well as charge-transfer resistance at heterojunction were still limited. In this study, we herein investigated the facile, inexpensive and reliable HNO3-based chemical passivation that directly introduced SiOx coating on Si nanowires. By adjusting the oxidation durations, the cell performance exhibited the improved conversion efficiency with more than 39% of efficiency enhancement than reference cells. Impacts of light harvesting and charge separation characteristics on cell performances were in-depth envisioned.

AB - Surface recombination of photogenerated carriers turned to be critical issues against the realization of high-performance nanowire-based solar cells. To overcome it, the strategy toward passivating nanowire surfaces was essential where the improvement of minority carrier lifetime was identified in recent years; instead, the examinations of optical management as well as charge-transfer resistance at heterojunction were still limited. In this study, we herein investigated the facile, inexpensive and reliable HNO3-based chemical passivation that directly introduced SiOx coating on Si nanowires. By adjusting the oxidation durations, the cell performance exhibited the improved conversion efficiency with more than 39% of efficiency enhancement than reference cells. Impacts of light harvesting and charge separation characteristics on cell performances were in-depth envisioned.

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JO - Materials Letters

JF - Materials Letters

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Interface management of silicon-nanowire based hybrid solar cells through facile solution-processed oxidation

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