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https://hdl.handle.net/20.500.14279/32572
Title: | Optimized Doping of Diffusion Blocking Layers and Their Impact on the Performance of Perovskite Photovoltaics | Authors: | Galatopoulos, Fedros Bitton, Sapir Tziampou, Maria Tessler, Nir Choulis, Stelios A. |
Major Field of Science: | Engineering and Technology | Field Category: | Mechanical Engineering | Keywords: | perovskite solar cells;diffusion mechanisms;fullerenes;doping;conductivity;thermal stability;lifetime;electron-transporting layers | Issue Date: | 24-Oct-2023 | Source: | ACS applied electronic materials, 2023, vol. 5, iss. 10, pp. 5580–5587 | Volume: | 5 | Issue: | 10 | Start page: | 5580 | End page: | 5587 | Journal: | ACS applied electronic materials | Abstract: | The roll-to-roll printing production process for hybrid organic-inorganic perovskite solar cells (PSCs) demands thick and high-performance solution-based diffusion blocking layers. Inverted (p-i-n) PSCs usually incorporate solution-processed PC70BM as the electron-transporting layer (ETL), which offers good electron charge extraction and passivation of the perovskite active layer grain boundaries. Thick fullerene diffusion blocking layers could benefit the long-term lifetime performance of inverted PSCs. However, the low conductivity of PC70BM significantly limits the thickness of the PC70BM buffer layer for optimized PSC performance. In this work, we show that by applying just enough N-DMBI doping principle, we can maintain the power conversion efficiency (PCE) of inverted PSCs with a thick (200 nm) PC70BM diffusion blocking layer. To better understand the origin of an optimal doping level, we combined the experimental results with simulations adapted to the PSCs reported here. Importantly, just enough 0.3% wt N-DMBI-doped 200 nm PC70BM diffusion blocking layer-based inverted PCSs retain a high thermal stability at 60 °C of up to 1000 h without sacrificing their PCE photovoltaic parameters. | URI: | https://hdl.handle.net/20.500.14279/32572 | ISSN: | 26376113 26376113 |
DOI: | 10.1021/acsaelm.3c00900 | Rights: | This article is licensed under CC-BY 4.0 Attribution-NonCommercial-NoDerivatives 4.0 International |
Type: | Article | Affiliation : | Cyprus University of Technology Technion-Israel Institute of Technology |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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