Surface and Bulk Defect Passivation in MAPbI3 Perovskites with Daminozide: Effects on Carrier Dynamics and Mobility DOI Creative Commons

Junhan Xie,

Di Li,

Haozheng Li

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Metal halide perovskite semiconductors are highly valued for their outstanding optoelectronic properties. However, the high density of intrinsic defect states in polycrystalline thin films on surface and within bulk poses a significant challenge by diminishing carrier mobility lifetime, thus hindering device performance. This study reveals previously unidentified mid‐IR emissive trapping state MAPbI 3 that differs from conventional Shockley‐Read‐Hall (SRH) defects, exhibiting unique surface‐localized characteristics detectable through transient spectroscopy. A dual‐function passivation strategy using daminozide (DA) is developed, where interlayer selectively passivates mid‐IR‐active defects while additive mitigates SRH carbonyl‐Pb 2 ⁺ coordination. yields remarkable improvements dynamics, increasing diffusion constants 0.135 to 0.165 cm s⁻¹ significantly enhancing performance, including open‐circuit voltage power conversion efficiency. These findings highlight crucial importance addressing both optimize properties perovskites.

Language: Английский

Optimizing Monolayers for High-Efficiency Methylammonium-Free Perovskite Solar Cells DOI

Zuwang Liu,

Bo Yu, Shengwei Shi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

Self-assembled monolayers (SAMs) have been widely applied to perovskite solar cells (PSCs) due their transparency, tunability, selectivity, and diversity. While numerous studies focused on synthesizing various new types of SAMs enhance charge transport, there remains a need for further research reducing clusters improving the film coverage. Achieving uniform ensuring intimate contact with are processes that require deeper investigation. In this study, we employ additive engineering introduce micromolecule, 4-mercaptophenylacetic acid (4MA), into [4-(3,6-diphenyl-9H-carbazol-9-yl) butyl] phosphonic (Ph-4PACz). The incorporation 4MA can not only prevent aggregation Ph-4PACz through competitive mechanism, leading improved coverage uniformity, but also passivate layer reduce recombination in PSCs. As result, more homogeneous higher-quality films achieved both surface bottom layer. Moreover, optimizes alignment energy band enhances carrier transfer. These combined effects contribute high power conversion efficiency 23.8% methylammonium-free Our study demonstrates potential presents method producing SAMs, which is highly advantageous industrial applications.

Language: Английский

Citations

0
Advancing Self‐Assembled Molecules Toward Interface‐Optimized Perovskite Solar Cells: from One to Two DOI Creative Commons
Tanghao Liu, Chuanyao Luo,

Ruiqin He

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Abstract Perovskite solar cells (PSCs) have rapidly gained prominence as a leading candidate in the realm of solution‐processable third‐generation photovoltaic (PV) technologies. In high‐efficiency inverted PSCs, self‐assembled monolayers (SAMs) are often used hole‐selective layers (HSLs) due to advantages high transmittance, energy level matching, low non‐radiative recombination loss, and tunable surface properties. However, SAMs been recognized suffer from some shortcomings, such incomplete coverage, weak bonding with substrate or perovskite, instability, so on. The combination different so‐called co‐SAM is an effective strategy overcome this challenge. Perspective, latest achievements molecule design, deposition method, working principle, application discussed. This comprehensive overview milestones advancing research field, coupled in‐depth analysis improved interface properties using approach, aims offer valuable insights into key design principles. Furthermore, lessons learned will guide future development SAM‐based HSLs perovskite‐based optoelectronic devices.

Language: Английский

Citations

0
Union of Perovskite and Silicon: Overcoming Electrical Losses for Surpassing Shockley–Queisser Limit DOI
Jianxun Li, Kai Wang,

Jieqiong Liu

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 6, 2025

Abstract Perovskite/silicon tandem solar cells (TSCs) have emerged as a highly promising technology for achieving exceptional power conversion efficiencies by leveraging the complementary light absorption properties of perovskite and silicon materials. However, electrical losses—originating from suboptimal film quality, pronounced nonradiative recombination at contact interfaces, charge transport inefficiencies in interconnecting layers (ICLs)—remain significant obstacles to reaching theoretical efficiency limits. This review systematically investigates primary sources losses perovskite/silicon TSCs offers comprehensive analysis recent advancements mitigating these losses, including enhancements reductions interfacial recombination, optimizations ICL performance. Special focus is placed on strategies aimed minimizing perovskite/perovskite/silicon triple‐junction TSCs. The concludes outlining future research directions, emphasizing critical role ongoing innovation material design, engineering, device architecture fully unlock potential

Language: Английский

Citations

0
Surface and Bulk Defect Passivation in MAPbI3 Perovskites with Daminozide: Effects on Carrier Dynamics and Mobility DOI Creative Commons

Junhan Xie,

Di Li,

Haozheng Li

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Metal halide perovskite semiconductors are highly valued for their outstanding optoelectronic properties. However, the high density of intrinsic defect states in polycrystalline thin films on surface and within bulk poses a significant challenge by diminishing carrier mobility lifetime, thus hindering device performance. This study reveals previously unidentified mid‐IR emissive trapping state MAPbI 3 that differs from conventional Shockley‐Read‐Hall (SRH) defects, exhibiting unique surface‐localized characteristics detectable through transient spectroscopy. A dual‐function passivation strategy using daminozide (DA) is developed, where interlayer selectively passivates mid‐IR‐active defects while additive mitigates SRH carbonyl‐Pb 2 ⁺ coordination. yields remarkable improvements dynamics, increasing diffusion constants 0.135 to 0.165 cm s⁻¹ significantly enhancing performance, including open‐circuit voltage power conversion efficiency. These findings highlight crucial importance addressing both optimize properties perovskites.

Language: Английский

Citations

0