Moisture Uptake Relaxes Stress in Metal Halide Perovskites at the Expense of Stability DOI
Gabriel R. McAndrews, Boyu Guo, Samantha C. Kaczaral

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(8), P. 4153 - 4161

Published: July 30, 2024

Previous studies have shown that the degradation rate of metal halide perovskites in an ambient atmosphere increases with amount tensile stress, which primarily arises from coefficient thermal expansion mismatch substrate. In this work, we show first evidence stress relaxation perovskite films resulting moisture uptake. Indeed, for multiple compositions observe tension relaxes rapidly conditions, as compared to inert quartz crystal microbalance measurements showing a mass density increase on similar time scale indicative The uptake at free surfaces, including grain boundaries, can reduce constrained film, how adatom diffusion reduces residual following thin film formation. Unfortunately, catalyze other mechanisms such PbI2 formation or transition nonperovskite structural phase. Stress-induced is especially important problem all-inorganic because they are annealed much higher temperatures, causing high stress. It explains unusually poor stability these perovskites. Using diethyl ether antisolvent bath attach CsPbI2Br substrate lower temperature, reduced initial strain 0.43 ± 0.04% 0.12 0.05%, thus reducing driving force and improving its phase by over factor 15.

Language: Английский

Synergistic electrical and light management enables efficient monolithic inorganic perovskite/organic tandem solar cells with over 24% efficiency DOI
Shan Jiang, Ruyue Wang, Minghua Li

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 219 - 226

Published: Nov. 15, 2023

A synergistic strategy for reducing electrical loss and optimizing current balance was reported to fabricate high-efficiency monolithic inorganic perovskite/organic tandem solar cells. The resulting devices achieved a champion efficiency of 24.07%.

Language: Английский

Citations

24
Bridging the buried interface with conjugated molecule for highly efficient carbon-based inorganic CsPbI2Br perovskite solar cells fabricated in air DOI
Yifei Shi, Lei Zhang, Shuming Hu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152210 - 152210

Published: May 13, 2024

Language: Английский

Citations

8
Pseudohalide‐Based Ionic Liquids: Advancing Crystallization Kinetics and Optoelectronic Properties in All‐Inorganic Perovskite Solar Cells DOI Creative Commons
Murat Ebiç, Faranak Sadegh, Muhammad Ans

et al.

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 10, 2024

This study delves into the innovative approach of enhancing efficiency and stability all-inorganic perovskite solar cells (I-PSCs) through strategic incorporation thiocyanate (SCN

Language: Английский

Citations

8
MXene-based materials for efficient applications in perovskite solar cells: A review DOI
Yue Li,

Yuhua Wang,

Zichao Xu

et al.

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 215, P. 214 - 232

Published: July 29, 2024

Language: Английский

Citations

7
Effective n-type de-doping of perovskite surface via defect passivation and improved film crystallization for high-efficiency inorganic solar cells DOI
Hui Li, Jialong Duan,

Naimin Liu

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(34), P. 23067 - 23075

Published: Jan. 1, 2024

An n/n − homojunction at the top perovskite/carbon interface is realized by doping natural additive for accelerating charge extraction and suppressing carrier nonradiative recombination in carbon-based CsPbI 2 perovskite solar cells.

Language: Английский

Citations

5
Columnar Macrocyclic Molecule Tailored Grain Cage to Stabilize Inorganic Perovskite Solar Cells with Suppressed Halide Segregation DOI

Naimin Liu,

Jialong Duan, Hui Li

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 2, 2024

Abstract Solidifying the soft lattice of all‐inorganic mixed‐halide perovskites is great importance to restrain notorious halide segregation under persistent light illumination. Herein, a multifunctional columnar macrocyclic molecule additive, namely cucurbituril into perovskite precursor enhance crystallization and reduce defect density in final film introduced. Based on theoretical calculation simulation, with strong double‐ended negatively‐charged cavity surrounded by terminated oxygen atoms not only coordinates dangling Pb 2+ ions form host‐guest complexation but also induces an electric dipole field at grain boundary effectively repel iodide ion migration from inside defective boundary, significantly suppressing improving device performance. As result, carbon‐based, CsPbI 2 Br solar cell achieves enhanced efficiency 15.59% tolerance environmental stresses. These findings provide new insights development novel passivation strategy molecules for making high‐efficiency stable cells.

Language: Английский

Citations

5
Polyoxometalate-Modified g-C3N4 Composites with High Work Function for Triboelectric Nanogenerators DOI
Ying Su, Xiaodong Liu, Haoyu Wang

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(2), P. 1328 - 1336

Published: Jan. 3, 2024

Designing friction materials with high electron storage capacity, work function, low cost, and stability is an important method to improve the output performance of a triboelectric nanogenerator (TENG). Here, we report two kinds based on Keggin-type polyoxometalates (POMs)-modified graphite carbon nitride (g-C3N4), namely, g-C3N4@PMo12 g-C3N4@PW12, form TENG commercial indium tin oxide/poly(ethylene terephthalate) (ITO/PET) electrodes. The test shows that device exhibits voltage about 78 V, current 657 nA, transfer charge 15 nC, which more than 3 times higher unmodified TENG. This improvement attributed fact POM loaded surface g-C3N4 can be used as shallow trap increase capacity through interaction density material by increasing function composite. not only broadens choices but also offers practical means enhancing TENG's performance.

Language: Английский

Citations

4
Hot-casting process assisted air-compatible low-temperature CsPbI2Br perovskite solar cells DOI
Yifan Zhou, Zhi Wang, Qinglin Chen

et al.

Materials Research Bulletin, Journal Year: 2024, Volume and Issue: 174, P. 112707 - 112707

Published: Jan. 28, 2024

Language: Английский

Citations

4
Organic‐Hydrochloride‐Modified ZnO Electron Transport Layer for Efficient Defect Passivation and Stress Release in Rigid and Flexible all Inorganic Perovskite Solar Cells DOI Open Access
Wenjie Xu,

Xiaoxuan Tang,

Jie Xiong

et al.

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 22, 2024

Abstract All inorganic CsPbI 2 Br perovskite (AIP) has attracted great attention due to its excellent resistance against thermal stress as well the remarkable capability deliver high‐voltage output. However, solar cells (PeSCs) still encounter critical challenges in attaining both high efficiency and mechanical stability for commercial applications. In this work, formamidine disulfide dihydrochloride (FADD) modified ZnO electron transport layer (ETL) been developed fabricating inverted devices on either rigid or flexible substrate. It is found that FADD modification leads efficient defects passivation, thereby significantly reducing charge recombination at AIP/ETL interface. As a result, PeSCs (r‐PeSCs) an enhanced of 16.05% improved long‐term stability. Moreover, introduced can regulate Young's modulus (or Derjaguin‐Muller‐Toporov (DMT) modilus) ETL dissipate concentration interface, effectively restraining crack generation improving PeSCs. The (f‐PeSCs) exhibit one best performances so far reported with 6000 bending cycles curvature radius 5 mm. This work thus provides effective strategy simultaneously improve photovoltaic performance

Language: Английский

Citations

4
Surface Regulation via Carboxylate Polymer for Efficient and Stable CsPbI2Br Perovskite Solar Cells DOI Open Access
Weilin Zhang,

Chen Duan,

Mengzhen Du

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract CsPbI 2 Br perovskite solar cell (PSC) is a promising candidate for high‐efficiency single‐junction and tandem cells. However, due to the numerous surface defects of film mismatch energy levels at Br/charge transport layer interface, power conversion efficiency (PCE) PSC still significantly lower than theoretical limits. To alleviate those issues, in this work, carboxylate‐based p‐type polymer, TTC‐Cl, employed modify layer. TTC‐Cl can interact with uncoordinated Pb 2+ , thereby mitigating surficial reducing non‐radiative recombination losses. Furthermore, also improves band properties thin surface, rendering it more p‐type, which facilitates hole transport. Consequently, PSCs modification achieve remarkable PCE 17.81%, notably higher that counterpart without (15.87%). Moreover, exhibit better stability. This work highlights importance regulation via carboxylate polymer further enhancing performance PSCs.

Language: Английский

Citations

4