Indicators and performance requirements for suppliers’ evaluation in the Brazilian electricity sector DOI Creative Commons
Thamires Eis Duarte, Priscilla Cristina Cabral Ribeiro, Helder Gomes Costa

et al.

Brazilian Journal of Operations & Production Management, Journal Year: 2024, Volume and Issue: 21(3), P. 1984 - 1984

Published: June 17, 2024

Objective: This paper presents a conceptual model comprising performance indicators designed for evaluating suppliers in companies within the electricity sector. Design / Methodology Approach: The was developed based on articles identified from Scopus and Web of Science, which provided their associated requirements, validated by both academics practitioners. A multiple case study method applied, interviews were conducted with nine participants six leading companies, had highest revenues sector Brazil. semistructured administered remotely. For data analysis, authors assessed alignment essential requirements suppliers' evaluation. evaluation carried out using Lawshe’s (1975) scale, Content Validity Ratio (CVR), critical CVR (Wilson et al., 2012). Results: consists tree groups indicators: quality, logistics, financial. In public facilitated external integration, whereas private this enabled internal integration. findings show that some not applicable to practice, while all context practitioners’ reality. Limitations investigation: notable limitation is relatively small number interviewees, particularly academic sample. Practical implications: proposal these aims guide more precise supplier procurement operation departments, manage valuable input (spare parts). Originality Value: meet scale calculation CVR, further two different actors (academics practitioners) found publications concerning suppliers’

Language: Английский

3D Crystal Framework Regulation Enables Se‐Functionalized Small Molecule Acceptors Achieve Over 19% Efficiency DOI Creative Commons
Wei Gao, Ruijie Ma, Lei Zhu

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(19)

Published: March 10, 2024

Abstract Se‐functionalized small molecule acceptors (SMAs) exhibit unique advantages in constructing materials with near‐infrared absorption, but their photovoltaic performance lags behind that of S‐containing analogs organic solar cells (OSCs). Herein, two new Se‐containing SMAs, namely Se‐EH and Se‐EHp, are designed synthesized by regulating bifurcation site outer alkyl chain, which enables Se‐EHp to form different 3D crystal frameworks from CH1007. displays tighter π–π stacking denser packing framework smaller‐sized pore structure induced larger steric hindrance effect chain branched at 2‐position, a higher dielectric constant PM6:Se‐EH active layer can be obtained. OSCs based on achieved very high PCEs 18.58% binary 19.03% ternary devices FF approaching 80% for SMAs. A more significant adjusts the molecular crystallization favorable nanofiber interpenetrating network an appropriate domain size reduce rate sub‐ns recombination promote balanced transport carriers. This work provides references further design development highly efficient

Language: Английский

Citations

16
C-shaped ortho-benzodipyrrole-based acceptors with different electronic effects of top substituents for as-cast green-solvent processed high-performance organic solar cells DOI Creative Commons
Yufei Gong,

Tianwei Zou,

Xiaojun Li

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(18), P. 6844 - 6855

Published: Jan. 1, 2024

We systematically investigated the effects of top substituents on physicochemical properties SMAs and achieved highest PCE for OSCs processed using a non-halogenated solvent without any extra treatment.

Language: Английский

Citations

16
Crossbreeding Effect of Chalcogenation and Iodination on Benzene Additives Enables Optimized Morphology and 19.68% Efficiency of Organic Solar Cells DOI Creative Commons
Tao Zhou, Wenwen Jin, Yinfeng Li

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(23)

Published: March 25, 2024

Abstract Volatile solid additives have attracted increasing attention in optimizing the morphology and improving performance of currently dominated non‐fullerene acceptor‐based organic solar cells (OSCs). However, underlying principles governing rational design volatile remain elusive. Herein, a series efficient are successfully developed by crossbreeding effect chalcogenation iodination for photovoltaic performances OSCs. Five benzene derivatives 1,4‐dimethoxybenzene (DOB), 1‐iodo‐4‐methoxybenzene (OIB), 1‐iodo‐4‐methylthiobenzene (SIB), 1,4‐dimethylthiobenzene (DSB) 1,4‐diiodobenzene (DIB) systematically studied, where widely used DIB is as reference. The on overall property comprehensively investigated, which indicates that versatile functional groups provided various types noncovalent interactions with host materials modulating morphology. Among them, SIB combination sulphuration enabled more appropriate blend, giving rise to highly ordered molecular packing favorable As result, binary OSCs based PM6:L8‐BO PBTz‐F:L8‐BO well ternary PBTz‐F:PM6:L8‐BO achieved impressive high PCEs 18.87%, 18.81% 19.68%, respectively, among highest values

Language: Английский

Citations

10
Efficient and Stable All-Small-Molecule Solar Cells Enabled by Incorporating a Designed Giant Molecule Acceptor DOI
Xinrong Yang, Yuan Gao, Lin-Yong Xu

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(16), P. 5962 - 5971

Published: Jan. 1, 2024

A highly efficient and stable all-small-molecule system with excellent thickness tolerance recycling capability has been developed, by integrating a new giant molecule acceptor (Se-Giant) into the MPhS-C2:BTP-eC9 binary system.

Language: Английский

Citations

10
A High‐Performance Organic Photovoltaic System with Versatile Solution Processability DOI
Yiming Shao, Yuan Gao, Rui Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: July 14, 2024

Recently developed organic photovoltaic (OPV) materials have simultaneously closed the gaps in efficiency, stability, and cost for single-junction devices. Nonetheless, OPV still pose big challenges meeting requirements practical applications, especially regarding prevalent issues of solution processability. Herein, a highly efficient polymer donor, named DP3, incorporating an electron-rich benzo[1,2-b:4,5-b']dithiophene unit as well two similar simple acceptor units is presented. Its primary objective to enhance interchain and/or intrachain interactions ultimately fine-tune bulk-heterojunction microstructure. The DP3:L8-BO system demonstrates highest power conversion efficiency (PCE) 19.12%. This also exhibits high-performance devices with over 18% efficiencies five batches various molecular weights (23.6-80.8 KDa), six different blend thicknesses (95-308 nm), differenced coating speeds (3.0-29.1 m min

Language: Английский

Citations

7
Developing Benzodithiophene-Free donor polymer for 19.36% efficiency Green-Solvent-Processable organic solar cells DOI

Ying He,

Wenwen Jing,

Chentong Liao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151920 - 151920

Published: May 5, 2024

Language: Английский

Citations

6
Toward commercially viable non-fullerene organic solar cells: a critical review of recent developments in high-performance non-fused ring electron acceptors DOI
Elizaveta D. Papkovskaya, Dmitry O. Balakirev, Jie Min

et al.

Materials Today Energy, Journal Year: 2024, Volume and Issue: 43, P. 101591 - 101591

Published: May 5, 2024

Language: Английский

Citations

6
Insight into Organic Photovoltaic Cell: Prospect and Challenges DOI Creative Commons

Charity M. Nkinyam,

Chika Oliver Ujah,

Kingsley C. Nnakwo

et al.

Unconventional Resources, Journal Year: 2024, Volume and Issue: unknown, P. 100121 - 100121

Published: Sept. 1, 2024

Language: Английский

Citations

6
The Value of Device Characterization for the Optimization of Organic Solar Cells DOI Creative Commons
Leonard Christen, Beatriz Urbano, Andreas Krause

et al.

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

Published: Feb. 27, 2025

Abstract In addition to achieving record efficiencies of ≈20%, organic photovoltaics (OPV) has overcome several additional challenges. These include researching environmentally friendly solvents, improving stability, yield, and scaling up industrial standards in terms cell size mass production. However, identifying the optimal candidates from countless material combinations determining exact process parameters is like looking for a needle haystack. Process optimization usually comprises phases such as device fabrication, measurement, evaluation, concluding with experimental design next round making. Given extent parameter space, this can be extremely time‐consuming. algorithms mainly based on mathematical models become more prevalent automated laboratories, question arises how physics domain knowledge characterization samples into algorithmic process. To address question, benchmark function created using solar data originating hundreds cells prepared different processing conditions. This used test compare approaches quantify under which conditions physical improve speed an laboratory.

Language: Английский

Citations

0
Transfer learning accelerated discovery of conjugated oligomers for advanced organic photovoltaics DOI Creative Commons
Siyan Deng,

J. Ng,

Shuzhou Li

et al.

Molecular Systems Design & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Transfer learning followed by density functional theory accelerates material discovery of conjugated oligomers for high-efficiency organic photovoltaic materials.

Language: Английский

Citations

0