Results 81 to 90 of about 235,876 (278)

Challenges and strategies toward long-term stability of lead-free tin-based perovskite solar cells

Communications Materials, 2022
Lead-based halide perovskite solar cells offer attractive power conversion efficiencies, but the release of lead into the environment is a major concern. Here, lead-free, tin-based perovskites are reviewed as an alternative, with a focus on how to extend
Ece Aktas, Nagalingam Rajamanickam, Jorge Pascual, Shuaifeng Hu, Mahmoud H. Aldamasy, Diego Di Girolamo, Wenhui Li, Giuseppe Nasti, Eugenia Martínez-Ferrero, Atsushi Wakamiya, Emilio Palomares, Antonio Abate   +11 more
doaj   +1 more source

Quantification of Ion Migration in CH3NH3PbI3 Perovskite Solar Cells by Transient Capacitance Measurements

, 2019
Solar cells based on organic-inorganic metal halide perovskites show efficiencies close to highly-optimized silicon solar cells. However, ion migration in the perovskite films leads to device degradation and impedes large scale commercial applications ...
Ehrler, Bruno, Fakharuddin, Azhar, Futscher, Moritz H., Haider, Muhammad Irfan, Lee, Ju Min, McGovern, Lucie, Muscarella, Loreta A., Schmidt-Mende, Lukas, Wang, Tianyi   +8 more
core   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Mechanical Properties of APbX3 (A=Cs or CH3NH3; X=I or Br) Perovskite Single Crystals

, 2015
The remarkable optoelectronic, and especially photovoltaic performance of hybrid-organic-inorganic perovskite (HOIP) materials drives efforts to connect materials properties to this performance.
Cahen, David, Cohen, Sidney R., Hodes, Gary, Kedem, Nir Klein, Rakita, Yevgeny   +4 more
core   +1 more source

Interfacial Modulation for High‐Efficiency Large‐Area Organic Photovoltaics and Perovskite‐Organic Tandem Solar Modules

Advanced Functional Materials, EarlyView.
Self‐assembled monolayers (SAMs) are promising hole‐transporting materials for organic photovoltaics (OPVs), but suffer from self‐aggregation and poor large‐area uniformity. We find that interfacial modification using nicotinic hydrazide can eliminate the residual SAM aggregates by forming energetically favorable complexes, yielding uniform SAM.
Seongwon Yoon, Kangsik Cho, Sungmin Park, Kyeongmin Kim, Hyungju Ahn, Junhyeong Kim, Ahyeon Jin, Uijoon Lee, Yoon Hee Jang, Yongseok Jun, Hae Jung Son   +10 more
wiley   +1 more source

Lead-free perovskites and derivatives for photogeneration: a roadmap to sustainable approaches for photovoltaics and photo(electro)catalysis

JPhys Energy
This roadmap provides a comprehensive overview of the latest advancements in lead-free perovskite materials for photovoltaic and photoelectrochemical /photocatalytic applications.
Isabella Poli, Teresa Gatti, Yan Li, Antonio Agresti, Luigi Angelo Castriotta, Francesca De Rossi, Sudhanshu Shukla, Tom Aernouts, Salvador Eslava, Lorenzo Malavasi, Edoardo Mosconi, Joel van Embden, Dhiman Kalita, Enrico Della Gaspera, G Krishnamurthy Grandhi, Krishnaiah Mokurala, Paola Vivo, Nakita K Noel, Jay B Patel, Marcello Righetto, Paola Ragonese, Sandheep Ravishankar, Chiara Maurizio, Francesco Lamberti, Kassio P S Zanoni, Michele Sessolo, Monica Morales-Masis, Ribhu Bhatia, Simone Argiolas, Andrea Le Donne, Alessandro Mattoni, Simone Meloni, Jenny Baker, Rosario Vidal   +33 more
doaj   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

Advanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon, Doyeong Yeo, In‐Chul Hwang, In Hwan Jung, Joon Hak Oh   +4 more
wiley   +1 more source

A Systematical Study on Bands and Defects of CsBX₃ (B = Pb, Sn, Ge, X = Cl, Br, I) Perovskite Based on First Principles

Molecules
Metal halide perovskites have attracted considerable attention as novel optoelectronic materials for their excellent optical and electrical properties.
Chunqian Zhang, Hao Wang, Wenqi Huang, Yuhua Zuo, Jin Cheng   +4 more
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source