Centimeter-scale fullerene-free tin-based perovskite solar cells achieving over 14% efficiency DOI Creative Commons
Jia Liang, Tianpeng Li,

Feifei He

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Fullerene-based materials have traditionally served as the primary electron transport layers (ETLs) in environmentally friendly tin-based perovskite solar cells (TPSCs) due to their suitable band structures. However, they suffer from limitations such high cost, complex synthetic process, low mobilities, limited interactions with Sn-based perovskites, and challenges tuning chemical electrical structures, which hindered further improvements power conversion efficiency (PCE) of TPSCs. To tackle these issues, we propose a fullerene-free TPSC architecture introduce series low-cost non-fullerene materials, i.e. fluorinated triple-acceptor polymers (named P1, P2, P3), alternative ETLs. Compared fullerene-based ETL, indene-C60 bisadduct (ICBA), ETLs exhibit facile three orders magnitude higher structural flexibility. Additionally, form continuous conformal interfaces layers, enabling stronger more uniform over large-area layers. In 1-cm2 TPSCs, particularly those using P3 achieve remarkable PCE 14.39%, surpassing 10.61% observed TPSCs ICBA ETL. Notably, ETL achieved record 16.06% for small area 0.04-cm2 (certified at 15.90%). Furthermore, demonstrates exceptional stability, showing no significant degradation 1200 hours shelf storage maintaining nearly 86% its initial after 550 h maximum point tracking under 1-sun illumination. This enhanced stability is attributed robust hydrophobicity conferred by long alkyl side chains. Overall, this study substantiates substantial potential advancing both photovoltaic performance

Language: Английский

A Natural Antioxidant Organic Material Modifying the Buried Interface To Regulate the Photovoltaic Performance and Stability of Pure Tin-Based Perovskite Solar Cells DOI
Shuqi Wang, Xuefei Ren, Peng Qiu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14138 - 14146

Published: Feb. 19, 2025

Despite showing great potential in lead-free green energy, tin-based perovskite materials still face challenges such as inherent material instability and energy level misalignment with the hole transport layer (HTL), which limits advancement of solar cells (Sn-PSCs). In this work, a natural antioxidant organic small molecule, thiolactic acid (TA), is used to modify interface between PEDOT:PSS film. The TA molecule can cross-link form network polymer regulate microstructure photoelectrical characteristics PEDOT:PSS. Meanwhile, contains C═O C─S groups, interact Sn2+ inhibit its oxidation. Moreover, introduction interfacial modification effectively improves morphology film, suppresses charge recombination, promotes carrier transport. Thus, TA-modified Sn-PSCs achieve champion power conversion efficiency 9.03%, surpassing 6.92% control PSCs. Even after being stored for 1000 h nitrogen atmosphere, unencapsulated devices maintain 95.4% their original PCE, compared only 66.5% devices. This study demonstrates significance PEDOT:PSS/tin-perovskite on stability Sn-PSCs.

Language: Английский

Citations

0
Tailored Supramolecular Interface Enables Efficient and Stable Tin Halide Perovskite Photovoltaics DOI Creative Commons

Miao Zeng,

Zhongliang Yan,

Xinyu Ye

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1357 - 1365

Published: Feb. 24, 2025

Language: Английский

Citations

0
Perylene diimide cathode interface layer with siloxane bay-modification for efficient and stable organic solar cells DOI
Dan Zhou,

Yujie Pu,

Yanyan Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161155 - 161155

Published: March 1, 2025

Language: Английский

Citations

0
Simple I‐Shaped Aryl‐Based Dyes for Tin Perovskite Solar Cells with Selenophene Core Moiety as Self‐Assembled Monolayers on NiOx Using Two‐Step Fabrication DOI Creative Commons

Yun‐Sheng Shih,

Arulmozhi Velusamy,

Chun‐Hsiao Kuan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract Six novel organic small molecules, TPA‐Sp‐PA ( 1 ), TPA‐Sp‐PE 1E TPA‐T‐PA 2 TPA‐T‐PE 2E TPA‐P‐PA 3 ) and TPA‐P‐PE 3E are developed applied to NiOx films as self‐assembled monolayers (SAMs) for tin perovskite solar cells (TPSCs). The linker between acceptor (phosphonic acid (PA) or phosphonic ester (PE)) donor (triphenylamine (TPA)) plays an important role in facilitating the growth of high‐quality using a two‐step method. Three different types linkers, phenyl ring (P), thiophene (T), selenophene (Sp), studied, which Sp‐based SAMs provide best device performance with achieving PCE 8.7%, its acidic analog, reaching maximum 8.3%. Single crystal structures successfully obtained, expectation that uniform SAM would form on NiOx/ITO substrate. research introduces approach enhance TPSC by integrating HTMs, offering promising avenue future progress technology through fabrication technique.

Language: Английский

Citations

0
Centimeter-scale fullerene-free tin-based perovskite solar cells achieving over 14% efficiency DOI Creative Commons
Jia Liang, Tianpeng Li,

Feifei He

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Fullerene-based materials have traditionally served as the primary electron transport layers (ETLs) in environmentally friendly tin-based perovskite solar cells (TPSCs) due to their suitable band structures. However, they suffer from limitations such high cost, complex synthetic process, low mobilities, limited interactions with Sn-based perovskites, and challenges tuning chemical electrical structures, which hindered further improvements power conversion efficiency (PCE) of TPSCs. To tackle these issues, we propose a fullerene-free TPSC architecture introduce series low-cost non-fullerene materials, i.e. fluorinated triple-acceptor polymers (named P1, P2, P3), alternative ETLs. Compared fullerene-based ETL, indene-C60 bisadduct (ICBA), ETLs exhibit facile three orders magnitude higher structural flexibility. Additionally, form continuous conformal interfaces layers, enabling stronger more uniform over large-area layers. In 1-cm2 TPSCs, particularly those using P3 achieve remarkable PCE 14.39%, surpassing 10.61% observed TPSCs ICBA ETL. Notably, ETL achieved record 16.06% for small area 0.04-cm2 (certified at 15.90%). Furthermore, demonstrates exceptional stability, showing no significant degradation 1200 hours shelf storage maintaining nearly 86% its initial after 550 h maximum point tracking under 1-sun illumination. This enhanced stability is attributed robust hydrophobicity conferred by long alkyl side chains. Overall, this study substantiates substantial potential advancing both photovoltaic performance

Language: Английский

Citations

0