Solar energy paper index
<strong>Enhancing Carrier Transport in Cs<sub>2</sub>AgBiBr<sub>6</sub> Double Perovskites through Multifunctional Ferroelectric Polymer Doping</strong>
One-line summary
A solar energy research paper on <strong>Enhancing Carrier Transport in Cs<sub>2</sub>AgBiBr<sub>6</sub> Double Perovskites through Multifunctional Ferroelectric Polymer Doping</strong>.
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Cs<sub>2</sub>AgBiBr<sub>6</sub> lead-free double perovskites are promising materials for optoelectronic applications but suffer from limited carrier transport due to defects and strong electron-phonon coupling. In this work, we introduce a multifunctional doping strategy using the ferroelectric polymer polyvinylidene fluoride (PVDF) to simultaneously address these challenges. PVDF modulates film crystallization to reduce defects, relaxes lattice strain to weaken electron-phonon coupling, and-after electrical polarization-provides a built-in electric field that promotes charge separation. As a result, PVDF-doped Cs<sub>2</sub>AgBiBr<sub>6</sub> solar cells achieve a champion power conversion efficiency of 1.91%, representing a 40% improvement over the control device (1.36%), with much improved stability. This work presents a simple and effective approach to improving carrier dynamics in double perovskites for broader optoelectronic applications.
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