Please use this identifier to cite or link to this item: 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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