Perovskite‐Coupled NIR Organic Hybrid Solar Cells Achieving an 84.2% Fill Factor and a 25.2% Efficiency: A Comprehensive Mechanistic Exploration DOI Open Access

Chieh‐Ming Hung,

Chia‐Jen Chih,

Kuo‐Hsiu Huang

и другие.

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract The integration of organic dyes in perovskite solar cells (PSCs) to utilize near‐infrared (NIR) photons remains a challenge. In this study, selenium‐incorporated ortho‐benzodipyrrole‐based NIR dye CB‐2Se was developed. CB‐2Se, featuring lower bandgap 1.35 eV, blended with PCBM form bulk‐heterojunction layer PSCs for electron extraction and transport. Compared Y6‐16 acceptor, the removal Tz unit suppresses self‐aggregation, improving its compatibility PCBM. A CB‐2Se:PCBM‐incorporated PSC achieved remarkable power conversion efficiency (PCE) 25.18% V OC 1.164 V, J SC 25.71 mA/cm 2 , Fill Factor 84.15%, outperforming that PCBM‐only reference device (24.35%) PCBM:Y6‐16‐based (24.49%). PCBM:CB‐2Se enhanced long‐term stability PSCs, retaining 88% initial after 1000 h under ambient air thermal conditions. photophysical interactions between have been comprehensively investigated by using femtosecond transient absorption spectroscopy. Ultrafast exciton separation into free charges occurs within 200 femtoseconds at interfaces CB‐2Se. For first time, transfer holes from back detected, providing valuable insights charge dynamics utilizing dyes.

Язык: Английский

Crystallization Modulation and Comprehensive Defect Passivation by Carbonyl Functionalized Spacer Cation Towards High‐Performance Inverted Perovskite Solar Cells DOI Open Access

Shiying Tang,

Zuolin Zhang,

Yue Yu

и другие.

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

The inverted cesium/formamidinium (CsFA)-based methylammonium-free perovskite solar cells possess great potential in simultaneously realizing high power conversion efficiency (PCE) and excellent stability. However, the uncontrollable crystallization process poor film quality hinder further enhancement of photovoltaic performance operational Herein, we propose a synergistic modulation strategy defects at grain boundaries (GBs) interface by using novel carbonyl functionalized spacer cation. L-Alanine benzyl ester hydrochloride (L-ABEHCl) containing ammonium cation is incorporated into precursor solution, increasing nucleation rate reducing crystal growth because its strong interaction with components, leading to increased size crystallinity. No 2D formed for L-ABEHCl as additive whereas upon post-treatment. It revealed that FA+ Cs+ solution suppress formation perovskite. As result, passivates GBs form organic salts Due minimized carrier nonradiative recombination losses, devices achieve maximum PCE 25.77 % (certified stabilized 25.59 %), which one highest PCEs ever reported based on vacuum flash evaporation method. unencapsulated target device maintains 90.85 initial after 2300 h continuous point tracking, among most stabilities accomplished devices.

Язык: Английский

Процитировано

0

Molecular Si-Cyclization Enables Versatile Organic Semiconductors for Durable Perovskite Solar Cells with 24.8% Efficiency DOI

Zongyuan Yang,

Zhaolong Ma, Zhe Wang

и другие.

ACS Energy Letters, Год журнала: 2025, Номер unknown, С. 1448 - 1456

Опубликована: Фев. 28, 2025

Язык: Английский

Процитировано

0

Synergy of Hybrid Carbon Electrode and Differential Pressure Driven MAPbI3 Crystal Growth on the Performance of Mesoscopic Perovskite Solar Cells DOI
Wenxiang Zhou,

S. K. Hong,

Fanhua Yu

и другие.

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106162 - 106162

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Impact of Hydrogen Vacancies on Non‐Radiative Recombination in Metal‐Halide Perovskites DOI Open Access
Wencai Zhou,

Xiqi Yang,

Rongkun Zhou

и другие.

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Abstract Hydrogen vacancies (V H ) were considered major non‐radiative recombination centers in hybrid perovskites. By employing a multiscale approach that combines first‐principles calculations and molecular dynamics (MDs) simulations, our findings indicated the V impact was overestimated due to previous metastable configurations. The organic molecules with located on either nitrogen or carbon atom act as ligands form energetically stable dimers Pb 2+ cations. These lower energy by 0.35–0.97 eV MAPbI 3 0.88–1.01 FAPbI , compared non‐bonding significantly boosted potential barriers of hole capture, resulting dramatic reduction carrier capture coefficients over 10 orders magnitude. Consequently, total ( C for dominant are order −17 −31 cm −3 s −1 respectively. uncovering negligible recombination, this work shifts focus toward more significant defects, instance, iodine interstitial (with coefficient −8 ), thereby paving way optimizing perovskite solar cells efficiency meet Shockley–Queisser limit.

Язык: Английский

Процитировано

0

Perovskite‐Coupled NIR Organic Hybrid Solar Cells Achieving an 84.2% Fill Factor and a 25.2% Efficiency: A Comprehensive Mechanistic Exploration DOI Open Access

Chieh‐Ming Hung,

Chia‐Jen Chih,

Kuo‐Hsiu Huang

и другие.

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract The integration of organic dyes in perovskite solar cells (PSCs) to utilize near‐infrared (NIR) photons remains a challenge. In this study, selenium‐incorporated ortho‐benzodipyrrole‐based NIR dye CB‐2Se was developed. CB‐2Se, featuring lower bandgap 1.35 eV, blended with PCBM form bulk‐heterojunction layer PSCs for electron extraction and transport. Compared Y6‐16 acceptor, the removal Tz unit suppresses self‐aggregation, improving its compatibility PCBM. A CB‐2Se:PCBM‐incorporated PSC achieved remarkable power conversion efficiency (PCE) 25.18% V OC 1.164 V, J SC 25.71 mA/cm 2 , Fill Factor 84.15%, outperforming that PCBM‐only reference device (24.35%) PCBM:Y6‐16‐based (24.49%). PCBM:CB‐2Se enhanced long‐term stability PSCs, retaining 88% initial after 1000 h under ambient air thermal conditions. photophysical interactions between have been comprehensively investigated by using femtosecond transient absorption spectroscopy. Ultrafast exciton separation into free charges occurs within 200 femtoseconds at interfaces CB‐2Se. For first time, transfer holes from back detected, providing valuable insights charge dynamics utilizing dyes.

Язык: Английский

Процитировано

0