High Performance PbS Colloidal Quantum Dot Solar Cells by Employing Solution‐Processed CdS Thin Films from a Single‐Source Precursor as the Electron Transport Layer
作者： Long Hu , Robert J Patterson , Yicong Hu , Weijian Chen , Zhilong Zhang
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摘要: CdS thin films are a promising electron transport layer in PbS colloidal quantum dot (CQD) photovoltaic devices. Some traditional deposition techniques, such as chemical bath and RF (radio frequency) magnetron sputtering, have been employed to fabricate CdS/PbS CQD heterojunction However, their power conversion efficiencies (PCEs) moderate compared with ZnO/PbS TiO2/PbS solar cells. Here, improved substantially by employing solution-processed from single-source precursor. The film is deposited straightforward spin-coating annealing process, which simple, low-cost, high-material-usage fabrication process sputtering. best cell fabricated using an optimized air-annealing achieved over 8% PCE, demonstrating the great potential of precursor for CQDs
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