Dipropyl sulfide optimized buried interface to improve the performance of inverted perovskite solar cells DOI

Jiali Wei,

Xin Wang, H. Yang

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(14)

Published: Sept. 30, 2024

Recently, [4–(3,6-dimethyl-9H-carbazol-9-yl)butyl] phosphonic acid (Me-4PACz) has garnered significant attention as a highly effective passivation layer for NiOx. However, the Me-4PACz shows low wettability to perovskite precursors, hindering crystallization of perovskite. Moreover, does not uniformly and completely cover NiOx, failing achieve an optimal effect. The presence high-valence-state Ni species reactive hydroxyls on NiOx film surface leads degradation. To address this, dipropyl sulfide (DPS) was incorporated into solution Me-4PACz. This approach only enhances Me-4PACz, facilitating growth larger grains but also enables form homogeneous with strong coverage. effectively prevents direct contact between films. Additionally, DPS interacts hydroxyls, removing them from mitigating deprotonation reaction MA/FA in Furthermore, is reducible, which helps reducing high-valent (Ni4+), thereby decreasing redox reactions at interface. As result, optimized solar cells achieved power conversion efficiency (PCE) 22.29%, higher than control device 20.52%. DPS-decorated demonstrated excellent stability, retaining over 80% its initial PCE value, compared 60% retention device. work modified buried interface offers valuable insights subsequent similar studies.

Language: Английский

Dipropyl sulfide optimized buried interface to improve the performance of inverted perovskite solar cells DOI

Jiali Wei,

Xin Wang, H. Yang

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(14)

Published: Sept. 30, 2024

Recently, [4–(3,6-dimethyl-9H-carbazol-9-yl)butyl] phosphonic acid (Me-4PACz) has garnered significant attention as a highly effective passivation layer for NiOx. However, the Me-4PACz shows low wettability to perovskite precursors, hindering crystallization of perovskite. Moreover, does not uniformly and completely cover NiOx, failing achieve an optimal effect. The presence high-valence-state Ni species reactive hydroxyls on NiOx film surface leads degradation. To address this, dipropyl sulfide (DPS) was incorporated into solution Me-4PACz. This approach only enhances Me-4PACz, facilitating growth larger grains but also enables form homogeneous with strong coverage. effectively prevents direct contact between films. Additionally, DPS interacts hydroxyls, removing them from mitigating deprotonation reaction MA/FA in Furthermore, is reducible, which helps reducing high-valent (Ni4+), thereby decreasing redox reactions at interface. As result, optimized solar cells achieved power conversion efficiency (PCE) 22.29%, higher than control device 20.52%. DPS-decorated demonstrated excellent stability, retaining over 80% its initial PCE value, compared 60% retention device. work modified buried interface offers valuable insights subsequent similar studies.

Language: Английский

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