Advanced mechanisms, innovative designs, and optimized simulations of electron transport channels toward enhance performance in Sb2S3 solar cells

• Incorporating perovskite into nanogaps of Sb2S3 films enhances optical absorption by 10%. • Perovskite nanogaps act as efficient electron transport channels, reducing carrier recombination. • Optimal nanochannel dimensions are 5 nm width and 15 nm spacing for maximum performance. • The proposed structure achieves a projected power conversion efficiency of 25.40%.