研究目的
To synthesize a new organic small molecule named DMZ as dopant-free HTM for highly efficient and stable inverted planar PSCs and to investigate the impact of HTL thickness on device performance.
研究成果
The new cheap and facile material DMZ offers an appealing alternative to PEDOT:PSS or PTAA for highly efficient and stable inverted planar PSCs, and the tuning of thickness of HTL proposes a way to maximize the performance of the corresponding devices.
研究不足
The study focuses on the performance and stability of DMZ-based PSCs under specific conditions (e.g., humidity and temperature). The scalability and cost-effectiveness of DMZ synthesis and device fabrication were not extensively discussed.
1:Experimental Design and Method Selection:
The study involved the synthesis of DMZ and its application as a dopant-free HTM in inverted planar PSCs. The thickness of the HTL was systematically varied to study its effect on device performance.
2:Sample Selection and Data Sources:
ITO glasses were used as substrates, and perovskite films were fabricated on top of DMZ or PEDOT:PSS HTLs.
3:List of Experimental Equipment and Materials:
Instruments included a solar simulator for J-V measurements, a spectrometer for PL and EQE measurements, and XRD for crystallinity analysis. Materials included DMZ, PEDOT:PSS, MAPbI3, PC61BM, and BCP.
4:Experimental Procedures and Operational Workflow:
Devices were fabricated by spin-coating DMZ or PEDOT:PSS onto ITO, followed by perovskite deposition, electron transport layer application, and Ag electrode evaporation.
5:Data Analysis Methods:
Performance parameters were extracted from J-V curves, and stability tests were conducted under controlled humidity and temperature.
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