Related Experiment Video
Updated: Jul 7, 2026
Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
Decoupling Processing-Morphology-Stability Relationships Enables 19.65% Organic Solar Cells With Exceptional
Zhipeng Yin1, Zhisheng Zhou1, Jialin Wu1
1Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, National Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China.
None:
The commercial viability of organic solar cells (OSCs) hinges critically on the simultaneous achievement of high efficiency and long-term operational stability. Yet, a quantitative mechanistic understanding of how multiple processing strategies collectively control film formation kinetics and device longevity remains scarce. In this work, a mechanism-guided multivariate framework is introduced to systematically deconvolve the individual and synergistic effects of solvent additives, solid additives, multi‑component blending, and thermal annealing. Using in situ time-resolved absorption spectroscopy, three distinct stages of film formation are identified, and the crystallization dynamics governed by different processing pathways are quantitatively resolved. A rationally designed synergistic combination of these strategies yields a highly ordered, thermodynamically robust bulk heterojunction (BHJ) morphology, enabling optimized OSCs that achieve a champion power conversion efficiency of 19.65% and outstanding stability under continuous 1‑sun-equivalent illumination (ISOS-L-1I). This work establishes a clear quantitative processing‑morphology‑stability correlation, providing a universal platform for the rational design of high‑performance, long‑lifetime OSCs.
Related Concept Videos
01:11P-N junction
01:28Stability of Conjugated Dienes
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.