Inorganic encapsulation method using solution-processible polysilazane for flexible solar cells

Jincheol Kim; Ji Hun Jang; Ju-Hee Kim; Kyoungwon Park; Jun Sung Jang; Jongsung Park; Nochang Park

doi:10.1021/acsaem.0c01593

Inorganic encapsulation method using solution-processible polysilazane for flexible solar cells

Jincheol Kim, Ji Hun Jang, Ju-Hee Kim, Kyoungwon Park, Jun Sung Jang, Jongsung Park, Nochang Park^*

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

In this work, we employed the method of perhydropolysilazane (PHPS) conversion into silica for encapsulating flexible perovskite solar cells (PSCs). The conversion process was conducted by the vacuum ultraviolet (VUV) irradiation method. To avoid the degradation of PSCs by the PHPS solution and high-energy light illumination of VUV (λ = 172 nm), the CdSe/ZnS-quantum dot (QD) was diffused in the polydimethylsiloxane matrix as a barrier layer. The barrier layer efficiently blocked the penetration of the PHPS solution into PSCs and UV illumination during the PHPS curing process. The resulting encapsulation layer presented a water vapor transmission rate of 8.63 × 10^–3 g m⁻² d^–1 (37.8 °C/100 RH %, relative humidity), enhancing the performance of PSCs because of the luminescence downshifting from QDs. Finally, we applied this encapsulation method to flexible PSCs. Their lifetime was enhanced by more than 400 h under ambient temperature.

[Graph presents]

Original language	English
Pages (from-to)	9257-9263
Number of pages	7
Journal	ACS Applied Energy Materials
Volume	3
Issue number	9
DOIs	https://doi.org/10.1021/acsaem.0c01593
Publication status	Published - 28 Sept 2020
Externally published	Yes

Keywords

inorganic encapsulation
solution processible
stability
perovskite
solar cells

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10.1021/acsaem.0c01593

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title = "Inorganic encapsulation method using solution-processible polysilazane for flexible solar cells",

abstract = "In this work, we employed the method of perhydropolysilazane (PHPS) conversion into silica for encapsulating flexible perovskite solar cells (PSCs). The conversion process was conducted by the vacuum ultraviolet (VUV) irradiation method. To avoid the degradation of PSCs by the PHPS solution and high-energy light illumination of VUV (λ = 172 nm), the CdSe/ZnS-quantum dot (QD) was diffused in the polydimethylsiloxane matrix as a barrier layer. The barrier layer efficiently blocked the penetration of the PHPS solution into PSCs and UV illumination during the PHPS curing process. The resulting encapsulation layer presented a water vapor transmission rate of 8.63 × 10–3 g m−2 d–1 (37.8 °C/100 RH %, relative humidity), enhancing the performance of PSCs because of the luminescence downshifting from QDs. Finally, we applied this encapsulation method to flexible PSCs. Their lifetime was enhanced by more than 400 h under ambient temperature.[Graph presents]",

keywords = "inorganic encapsulation, solution processible, stability, perovskite, solar cells",

author = "Jincheol Kim and Jang, {Ji Hun} and Ju-Hee Kim and Kyoungwon Park and Jang, {Jun Sung} and Jongsung Park and Nochang Park",

year = "2020",

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doi = "10.1021/acsaem.0c01593",

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T1 - Inorganic encapsulation method using solution-processible polysilazane for flexible solar cells

AU - Kim, Jincheol

AU - Jang, Ji Hun

AU - Kim, Ju-Hee

AU - Park, Kyoungwon

AU - Jang, Jun Sung

AU - Park, Jongsung

AU - Park, Nochang

PY - 2020/9/28

Y1 - 2020/9/28

N2 - In this work, we employed the method of perhydropolysilazane (PHPS) conversion into silica for encapsulating flexible perovskite solar cells (PSCs). The conversion process was conducted by the vacuum ultraviolet (VUV) irradiation method. To avoid the degradation of PSCs by the PHPS solution and high-energy light illumination of VUV (λ = 172 nm), the CdSe/ZnS-quantum dot (QD) was diffused in the polydimethylsiloxane matrix as a barrier layer. The barrier layer efficiently blocked the penetration of the PHPS solution into PSCs and UV illumination during the PHPS curing process. The resulting encapsulation layer presented a water vapor transmission rate of 8.63 × 10–3 g m−2 d–1 (37.8 °C/100 RH %, relative humidity), enhancing the performance of PSCs because of the luminescence downshifting from QDs. Finally, we applied this encapsulation method to flexible PSCs. Their lifetime was enhanced by more than 400 h under ambient temperature.[Graph presents]

AB - In this work, we employed the method of perhydropolysilazane (PHPS) conversion into silica for encapsulating flexible perovskite solar cells (PSCs). The conversion process was conducted by the vacuum ultraviolet (VUV) irradiation method. To avoid the degradation of PSCs by the PHPS solution and high-energy light illumination of VUV (λ = 172 nm), the CdSe/ZnS-quantum dot (QD) was diffused in the polydimethylsiloxane matrix as a barrier layer. The barrier layer efficiently blocked the penetration of the PHPS solution into PSCs and UV illumination during the PHPS curing process. The resulting encapsulation layer presented a water vapor transmission rate of 8.63 × 10–3 g m−2 d–1 (37.8 °C/100 RH %, relative humidity), enhancing the performance of PSCs because of the luminescence downshifting from QDs. Finally, we applied this encapsulation method to flexible PSCs. Their lifetime was enhanced by more than 400 h under ambient temperature.[Graph presents]

KW - inorganic encapsulation

KW - solution processible

KW - stability

KW - perovskite

KW - solar cells

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JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 9

ER -

Inorganic encapsulation method using solution-processible polysilazane for flexible solar cells

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Keywords

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