Functional Analysis and Instructive Selection of a Green Additive Achieve Dual-Interface Modification for Fabricating Self-Powered, High-Performance Perovskite Photodetectors DOI
Yong Wang, Guangsheng Liu, Feng Lin

et al.

ACS Photonics, Journal Year: 2024, Volume and Issue: 12(1), P. 128 - 139

Published: Dec. 27, 2024

The guanidine compound has recently been demonstrated to be effective in passivating interface defects and enhancing the performance stability of perovskite photodetectors (PPDs). However, selection utilization these compounds are conducted without comprehensive guidance due an insufficient understanding mechanisms functions their functional groups. Herein, we evaluated defect passivation capabilities acid (Gua) by analyzing its electrostatic potential molecular orbitals then applied it at all-inorganic SnO2 films. smoother morphology, larger crystal, improved optoelectronic properties Gua-modified films suppressing Gua. Moreover, systematic experiment calculation analyses have revealed that –C═NH group, with a higher electron cloud density, not only plays dominant role healing oxygen vacancies, free hydroxyl groups, Sn-related on surface but also passivates Pb2+ X– interface. Consequently, PPDs achieve exceptional detectivity 1.32 × 1013 Jones, responsivity 0.30 A/W, minimal dark current 1.55 10–9 A/cm2. This work provided valuable insights for customizing Lewis base molecules crucial groups universal strategy estimate select organic photoelectronic devices.

Language: Английский

Nature of defects and their passivation engineering for advancements in perovskite solar cells DOI

Katta Venkata Seshaiah,

Joo Hyun Kim

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152370 - 152370

Published: May 18, 2024

Language: Английский

Citations

8
Modifying the buried PEDOT:PSS/perovskite interface by dual-functional material to optimize the performance of pure Sn-based Perovskite Solar Cells DOI

Luocheng Chen,

Hengzhuo Cai,

Xinyi Luo

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105743 - 105743

Published: Jan. 1, 2025

Language: Английский

Citations

1
Research Progress of Cs-Based All-Inorganic Perovskite Solar Cells DOI Creative Commons

Shihui Xu,

Yang Lin, Xiaoping Zhang

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(11), P. 2671 - 2671

Published: May 31, 2024

In recent years, all-inorganic perovskite solar cells have become a research hotspot in the field of photovoltaics due to their excellent stability and optoelectronic performance, power conversion efficiency has increased from initial 2.9% over 20%. This article briefly introduces development cesium lead-based (CsPbX3-IPSC), including characteristics CsPbX3 materials, preparation methods, structure working principle IPSCs. Different optimization strategies for preparing high performance high-stability IPSCs, such as element doping interface modification, are discussed. The application prospects IPSCs also summarized.

Language: Английский

Citations

4
Synchronous Perovskite Crystallization Regulation and Buried Interface Modification Improve the Stability and Efficiency of a Planar Inorganic Perovskite Solar Cell DOI
Long Cheng, Cheng Song, Hanqing Liu

et al.

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

Published: March 9, 2025

The numerous defects in inorganic perovskites and inferior buried interfaces result serious nonradiative recombination energy loss, exacerbating the deterioration of performance perovskite solar cells. Here, we develop a facile strategy to simultaneously improve CsPbIBr2 quality by regulating crystallization modify interface forming 6-aminonicotinic acid (6AA) molecular interlayer through adding 6AA into precursor solution. It is found that effectively regulates process because molecules exhibit strong intermolecular interaction with components, resulting compact film improved morphology decreased defects. Meanwhile, are pushed downward during accumulate at form interlayer, which improves contact enhances charge transport interface. improvement modification decrease loss. Consequently, fabricated planar carbon-based cell demonstrates an efficiency 10.97% remarkably promoted long-term stability.

Language: Английский

Citations

0
Surface reconfiguration of CsPbI2Br perovskite through in situ constructing 0D Cs4PbI5Br capping layer improves the stability and efficiency of inorganic perovskite solar cells DOI

Dongsheng Wang,

Cheng Song, Long Cheng

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162516 - 162516

Published: April 1, 2025

Language: Английский

Citations

0
Enhancing crystallization and photovoltaic performance of CsPbIBr<sub>2</sub> perovskite through p-aminobenzoic acid DOI Open Access

M.O Fanning,

Fang Wang,

Chenfen Long

et al.

Acta Physica Sinica, Journal Year: 2025, Volume and Issue: 74(12), P. 0 - 0

Published: Jan. 1, 2025

Inorganic CsPbIBr<sub>2</sub> perovskite features high phase stability and light absorption coefficient, making it suitable for the development of tandem cells or semi-transparent cells. High-quality films are crucial importance fabricating efficient solar However, in comparison with CsPbI<sub>3</sub> CsPbI<sub>2</sub>Br, precursor has poor crystallinity low film coverage, which is prone to generating pinholes defects. Therefore, serious charge recombination often occurs inside devices. To address this problem, p-aminobenzoic acid (PABA) added regulate its crystallization dynamics work. Electrostatic potential distribution PABA shows that electron-rich regions (negative regions) mainly located near C=O. Fourier transform infrared spectroscopy indicates existence coordination interaction between C=O Pb<sup>2+</sup> formation hydrogen bonds -NH<sub>2</sub> halide anions. Ultraviolet-visible (UV-Vis) X-ray diffraction (XRD) spectra demonstrate a new intermediate phase, PABA·Pb…Br(I), formed molecules components precursor. The slows down rate perovskite, regulates grain growth, enables preparation dense films. XRD, UV-Vis, space limited current, linear sweep voltammetry employed characterize quality. After addition PABA, quality improved. Thus, enhanced. defect density reduced. And conductivity increased. efficiency champion cell increases 10.65% compared control (8.76%). Further, dark current-voltage curves, Mott-Schottky electrochemical impedance spectra, photoluminescence utilized analyze reasons improved photovoltaic performance. device exhibits reduced leakage enhanced built-in electric field, suppressed recombination, extraction at interface. In enhancement efficiency, PABA-regulated also exhibit stability. being stored air 1500 h, average unencapsulated remains 80% initial value.

Language: Английский

Citations

0
Regulation of the low-temperature processed TiO2 buried interface to enhance the efficiency of CsPbI2Br-based all-inorganic perovskite solar cells DOI

Hengzhuo Cai,

Shengcheng Wu,

Zixi Liu

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163473 - 163473

Published: May 1, 2025

Language: Английский

Citations

0
In Situ Forming a 0D Inorganic Perovskite Capping Layer via a Surface Reconstruction Process for High-Performance Inorganic Perovskite Solar Cells DOI
Dongsheng Wang, Long Cheng, Hanqing Liu

et al.

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

Published: June 2, 2025

Inorganic CsPbX3 perovskite solar cells have made great progress over the past several years. Nevertheless, vulnerable surface of deteriorates device stability and impedes further development performance. Herein, a reconstruction method is proposed to in situ construct 0D Cs4PbI1.5Br4.5 capping layer on top 3D CsPbI1.5Br1.5 for simultaneously decreasing defects promoting perovskite. It found that constructing atop not only remarkably enhances but also creates favorable energy level interface charge separation. In addition, this process causes secondary crystallization perovskite, improving quality. These features result remarkable reduction nonradiative recombination. As result, carbon-based exhibits promoted performance with power conversion efficiency up 12.93%. cell without any encapsulation maintains ∼94% original after 1080 h aging under an ambient environment.

Language: Английский

Citations

0
Modifying buried interface via 6-aminonicotinic acid molecule dipolar layer for efficient and stable inorganic perovskite solar cells DOI

Jiayu Bi,

Hanqing Liu,

Dongsheng Wang

et al.

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 628, P. 235943 - 235943

Published: Nov. 28, 2024

Language: Английский

Citations

3
Regulation of the Buried Interface to Achieve Efficient HTL-Free All-Inorganic CsPbI2Br-Based Perovskite Solar Cells DOI
Yun Tong,

Hengzhuo Cai,

Wanyang Lyu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(42), P. 57412 - 57420

Published: Oct. 10, 2024

The large voltage loss (Vloss) mainly stems from the mismatch between perovskite film and electron transport layer in CsPbI2Br-based all-inorganic solar cells (I-PSCs), which restricts power conversion efficiency (PCE) of devices. To address this issue, potassium benzoate (BAP) is first introduced as a bifunctional passivation material to regulate TiO2/CsPbI2Br interface, reduce Vloss, improve photovoltaic performance I-PSCs. Eventually, champion PCE I-PSCs without hole modified by BAP (Target-PSCs) improves 14.90% 12.14% reference PSCs. open-circuit (Voc) increases 1.27 V initial 1.14 after modification. A series characterizations show that modification can not only optimize energy level alignment but also passivize surface defects caused uncoordinated Cs+/Pb2+. Moreover, Target-PSCs encapsulation demonstrate better thermal stability, maintain 107.6% original annealing at 160 °C for 140 min humid air. While PSCs 76.5% their same process. This work provides simple strategy modify buried interface

Language: Английский

Citations

2