Xiao, G.B.; Mu, X.; Wang, L.; Suo, Z.Y.; Musiienko, A.; Li, G.; Guo, Z.; Wu, Y.; Abate, A.; Cao, J.: Recyclable Perovskite Solar Cells with Lead Sulfate Contact. CCS Chemistry 6 (2024), p. 2254-2263
10.31635/ccschem.024.202303502
Open Accesn Version
Abstract:
Previous cost analysis of perovskite solar cells (PSCs) has revealed that the transparent conductive oxide (TCO) substrates account for most of the material cost, emphasizing the need to recover TCO in PSC recycling. However, the conventional use of compact and ultrathin electron transport materials (ETMs) such as TiO2 and SnO2, poses a challenge to their removal from the substrate, hindering effective PSC recycling. Here, PbSO4 nanoparticles with (011) surface were used as ETM to fabricate PSCs. The yielded metallicity on the PbSO4 nanoparticle surface promoted extracted electron transport across the nanoparticle surface. A certified efficiency as high as 17.9% for the submodule (204.9 cm2) with PbSO4 was realized successfully, and the best efficiency on a small area (0.1 cm2) reached 24.1%. The PbSO4 layer was removed effortlessly from the substrate by simple aminoethanol washing to recover the TCO, the most expensive component of PSCs. This work provides a novel strategy to prepare soluble insulator-based ETMs by constructing metallic surfaces of nanoparticles; thus, fabricating efficient and recyclable PSCs.