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April 30, 2026Small0 citations

Polyaniline‐Enabled Defect Passivation for Stable and Efficient MAPbI 3 ‐Based Perovskite Solar Cells

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PNPardhasaradhi NandiganaSNSarojini NVJVarun J

Key Points

  • To investigate the role of Polyaniline in enhancing the stability and efficiency of MAPbI3-based perovskite solar cells.
  • Developed HTL-free perovskite solar cells using Polyaniline for defect passivation.
  • Measured power conversion efficiency and open-circuit voltage of the solar cells.
  • Assessed thermal stability at 85°C and photostability under continuous illumination.
  • Achieved power conversion efficiency of 11.55% with Polyaniline compared to 9.41% for pristine MAPI.
  • Open-circuit voltage reached 1.04 V with Polyaniline-modified films.
  • Demonstrated excellent thermal stability for 48 hours at 85°C.

Abstract

interface. These improvements translate into enhanced device performance in HTL-free perovskite solar cells, achieving a power conversion efficiency of 11.55% and an open-circuit voltage of 1.04 V, compared to 9.41% for pristine MAPI. Moreover, PANI-modified films exhibit excellent thermal stability at 85°C for 48 h and strong photostability under continuous illumination. This work establishes polyaniline as a simple and scalable strategy for developing efficient and durable perovskite solar cells.

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Cite This Study

Nandigana et al. (2026) studied this question.

synapsesocial.com/papers/69f2a4b78c0f03fd67763dd5https://doi.org/10.1002/smll.73566
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