2025年1月16日 · Formamidinium lead triiodide (FAPbI 3) is considered the most promising composition for high-performing single-junction solar cells. However, nonalloyed α-FAPbI 3 is metastable with respect to the photoinactive δ-phase.

2018年9月1日 · Based on our experimental and theoretical studies of FAPbI3 and MAPbI 3, FAPbI 3 is an appropriate candidate to be used as an active layer in solar cell optoelectronic device fabrications. Nowadays, one of the most active areas among modern industry is …

2023年10月18日 · The resultant formamidinium lead halides (FAPbI 3) films exhibit fewer defects, redshifted absorption and high phase purity without detectable nanoscale δ phase. Consequently, we achieved...

2021年4月5日 · Among a large number of compositions investigated, the cubic α-phase of formamidinium lead triiodide (FAPbI3) has emerged as the most promising semiconductor for highly efficient and stable ...

2024年2月24日 · Phase instability poses a serious challenge to the commercialization of formamidinium lead iodide (FAPbI 3)-based solar cells and optoelectronic devices. Here, we combine density functional...

2024年7月11日 · Black-phase formamidinium lead iodide (α-FAPbI 3) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases such as δ-FAPbI 3. We show that the classic solvent system for perovskite fabrication exacerbates this reproducibility challenge.

2022年2月17日 · These strategies can stabilize α-FAPbI 3 by reducing the system energy, regulating the phase transition process and energy barrier, reinforcing the lattice structure, and passivating film defects. In addition, we investigate fundamental challenges of α-FAPbI 3 PSCs and propose our perspective on preparing high-quality and high-purity α-FAPbI 3.

黑相甲脒铅碘 （ α-FAPbI3 ）具有最窄的带隙（在薄膜中通常为1.45-1.51 ev），然而由于FA+的大尺寸会导致晶格畸变，在常用环境条件下，该相容易转变为宽带隙黄色非钙钛矿相（δ-FAPbI3），造成薄膜质量的下降，制约了该材料的进一步应用。

2025年1月16日 · 甲脒三碘化铅 （fapbi3）被认为是高性能单结太阳能电池最具竞争力的吸收层材料，但其存在复杂的结晶动力学和热力学亚稳定性问题，并且制备非合金和高质量的α-fapbi3钙钛矿薄膜被证明是困难的。挑战包括与非光活性δ-fapbi3相比，α-fapbi3具有较高的成核障碍 ...

2023年5月28日 · Here, we fabricated FAPbI 3 perovskite films doped with 1-butyl-4-methylpyridinium chloride ( [4MBP]Cl), that results in the exposure of (011) facets, leading to improved charge carrier transport and energy level alignment. The [4MBP]Cl-doped perovskite films have fewer defects, suppressing non-radiative recombination.