Tailoring nanoscale interfaces for perovskite–perovskite–silicon triple-junction solar cells

Zheng, Jianghui (avtor), Wang, Guoliang (avtor), Duan, Leiping (avtor), Duan, Weiyuan (avtor), Jiang, Yang (avtor), Pearce, Phoebe (avtor), Gao, Yijun (avtor), Mahmud, Md Arafat (avtor), Liao, Chwenhaw (avtor), Leung, Tik Lun (avtor), Jankovec, Marko (avtor), Topič, Marko (avtor)

Triple‐junction solar cells theoretically outperform their double-junction and single‐junction counterparts in power conversion efficiency, yet practical perovskite–perovskite–silicon devices have fallen short of both theoretical limits and commercial targets. To address surface defects in the top perovskite junction, we introduce a piperazine-1,4-diium chloride treatment, which replaces less stable lithium fluoride. For interfacing the top and middle perovskite junctions, we optimize the size of gold nanoparticles deposited on atomic layer-deposited tin oxide for best ohmic contacting with minimal optical losses. Applying these strategies, our champion 1-cm2 triple‐junction cell achieved a third party-verified reverse‐scan power conversion efficiency of 27.06% with an open circuit voltage of 3.16 V. Scaling up to 16 cm2 , the device produced a certified steady‐state power conversion efficiency of 23.3%. Device longevity also improved by eliminating methylammonium and incorporating rubidium into the perovskite bulk alongside the piperazine-1,4-diium chloride surface layer. An encapsulated 1-cm2 cell retained 95% of its initial efficiency after 407 h at maximum power point and passed the IEC 61215 thermal cycling test. These results represent advancements towards efficient and stable perovskite–perovskite–silicon triple-junction solar cells.

• Jezik: Angleški jezik
• Ključne besede: photovoltaics, solar cell, perovskite, interface analysis
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: Str. 1648-1655
• Številčenje: Vol. 20
• PID: 20.500.12556/RUL-178226
• UDK: 621.383.51:549.641
• ISSN pri članku: 1748-3395
• DOI: 10.1038/s41565-025-02015-x
• COBISS.SI-ID: 252946947
• Datum objave v RUL: 21.01.2026

Gradivo je del revije

• Naslov: Nature nanotechnology
• Skrajšan naslov: Nat. nanotechnol.
• Založnik: Nature Publishing
• ISSN: 1748-3395
• COBISS.SI-ID: 22699303

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: fotovoltaika, sončna celica, perovskit, analiza vmesnih spojev