Crystalline buffer layer pushes organic solar cells to 20.21 percent efficiency

Tokyo (SPX) May 04, 2026

Researchers have achieved a power conversion efficiency of 20.21 percent in pseudo-planar heterojunction organic solar cells by introducing a crystalline polymer buffer layer that shields against solvent-induced erosion during fabrication.

The study, published in Chinese Journal of Polymer Science, addresses a persistent challenge in layer-by-layer deposition. During application of the top

• Source: https://www.solardaily.com/reports/Crystalline_buffer_layer_pushes_organic_solar_cells_to_20_21_percent_efficiency_999.html