Unveiling the Nanoparticle-Seeded Catalytic Nucleation Kinetics of Perovskite Solar Cells by Time-Resolved GIXS

Chung Yao Lin, Shao Sian Li, Je Wei Chang, Hao Chung Chia, Yu Yun Hsiao, Chun Jen Su, Bing Jun Lian, Cheng Yen Wen, Shao Ku Huang, Wei Ru Wu, Di Yan Wang, An Chung Su, Chun Wei Chen, U. Ser Jeng

Research output: Contribution to journalArticle

Abstract

Recently, a new seeding growth approach for perovskite thin films is reported to significantly enhance the device performance of perovskite solar cells. This work unveils the intermediate structures and the corresponding growth kinetics during conversion to perovskite crystal thin films assisted by seeding PbS nanocrystals (NCs), using time-resolved grazing-incidence X-ray scattering. Through analyses of time-resolved crystal formation kinetics obtained from synchrotron X-rays with a fast subsecond probing time resolution, an important “catalytic” role of the seed-like PbS NCs is clearly elucidated. The perovskite precursor-capped PbS NCs are found to not only accelerate the nucleation of a highly oriented intermediate phase, but also catalyze the conversion of the intermediate phase into perovskite crystals with a reduced activation energy Ea = 47 (±5) kJ mol−1, compared to 145 (±38) kJ mol−1 for the pristine perovskite thin film. The reduced Ea is attributed to a designated crystal lattice alignment of the perovskite nanocrystals with perovskite cubic crystals; the pivotal heterointerface alignment of the perovskite crystals coordinated by the Pb NCs leads to an improved film surface morphology with less pinholes and enhanced crystal texture and thermal stability. These together contribute to the significantly improved photovoltaic performance of the corresponding devices.

Original languageEnglish
Article number1902582
JournalAdvanced Functional Materials
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Perovskite
Nucleation
solar cells
nucleation
nanocrystals
Nanoparticles
nanoparticles
Nanocrystals
kinetics
Crystals
crystals
inoculation
thin films
alignment
Thin films
pinholes
grazing incidence
crystal lattices
Perovskite solar cells
perovskite

Keywords

  • catalytic additives
  • grazing-incidence X-ray scattering
  • heterogeneous interface
  • organo-lead trihalide perovskite
  • PbS nanocrystals

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

Cite this

Unveiling the Nanoparticle-Seeded Catalytic Nucleation Kinetics of Perovskite Solar Cells by Time-Resolved GIXS. / Lin, Chung Yao; Li, Shao Sian; Chang, Je Wei; Chia, Hao Chung; Hsiao, Yu Yun; Su, Chun Jen; Lian, Bing Jun; Wen, Cheng Yen; Huang, Shao Ku; Wu, Wei Ru; Wang, Di Yan; Su, An Chung; Chen, Chun Wei; Jeng, U. Ser.

In: Advanced Functional Materials, 01.01.2019.

Research output: Contribution to journalArticle

Lin, CY, Li, SS, Chang, JW, Chia, HC, Hsiao, YY, Su, CJ, Lian, BJ, Wen, CY, Huang, SK, Wu, WR, Wang, DY, Su, AC, Chen, CW & Jeng, US 2019, 'Unveiling the Nanoparticle-Seeded Catalytic Nucleation Kinetics of Perovskite Solar Cells by Time-Resolved GIXS', Advanced Functional Materials. https://doi.org/10.1002/adfm.201902582
Lin, Chung Yao ; Li, Shao Sian ; Chang, Je Wei ; Chia, Hao Chung ; Hsiao, Yu Yun ; Su, Chun Jen ; Lian, Bing Jun ; Wen, Cheng Yen ; Huang, Shao Ku ; Wu, Wei Ru ; Wang, Di Yan ; Su, An Chung ; Chen, Chun Wei ; Jeng, U. Ser. / Unveiling the Nanoparticle-Seeded Catalytic Nucleation Kinetics of Perovskite Solar Cells by Time-Resolved GIXS. In: Advanced Functional Materials. 2019.
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AU - Chia, Hao Chung

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AU - Su, Chun Jen

AU - Lian, Bing Jun

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AU - Huang, Shao Ku

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AU - Chen, Chun Wei

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