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Updated: May 23, 2025
Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
Multifunctional BODIPY-Structured n-Type Conjugated Polymer for Simultaneous Interface Energetic Modification and
Shuang Lian1,2, Mengyu Liu1,2, Helong Zhu1,2
1State Key Laboratory of Polymer Physics and Chemistry & Key Laboratory of Polymer Science and Technology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
Abstract:
The performance of inverted perovskite solar cells (PSCs) is hindered by non-radiative recombination within the perovskite and charge recombination at the cathode interface. To address these issues, we propose a technique involving oriented crystallization control and interface energetic modification using a conjugated thienyl-fused BODIPY homopolymer named IP1. IP1 demonstrated effectiveness in both defect passivation and energy level adjustment. Simultaneously, IP1 acts as a "protective shield" anchored on the grain boundaries and surfaces of perovskite, enhancing the crystal structure and preventing degradation of perovskite. Based on the efficient synergy above, the IP1-modified device achieves a high power conversion efficiency (PCE) of 25.06%, representing the highest value among n-type polymer-incorporated PSCs. More importantly, the IP1-modified device maintains 95% of its initial PCE after operating at the maximum power point (MPP) of 1000 h. This work combines achievements of n-type conjugated polymer science and interface energetic modification to open a new door for efficient and stable PSCs.
