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Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites

Metals, 2018
Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology.
Edson Meyer, Dorcas Mutukwa, Nyengerai Zingwe, Raymond Taziwa   +3 more
doaj   +1 more source

Double Charged Surface Layers in Lead Halide Perovskite Crystals [PDF]

Nano Letters, 2017
Understanding defect chemistry, particularly ion migration, and its significant effect on the surface's optical and electronic properties is one of the major challenges impeding the development of hybrid perovskite-based devices. Here, using both experimental and theoretical approaches, we demonstrated that the surface layers of the perovskite crystals
Smritakshi P. Sarmah, Victor M. Burlakov, Emre Yengel, Banavoth Murali, Erkki Alarousu, Ahmed M. El-Zohry, Chen Yang, Mohd S. Alias, Ayan A. Zhumekenov, Makhsud I. Saidaminov, Namchul Cho, Nimer Wehbe, Somak Mitra, Idris Ajia, Sukumar Dey, Ahmed E. Mansour, Maged Abdelsamie, Aram Amassian, Iman S. Roqan, Boon S. Ooi, Alain Goriely, Osman M. Bakr, Omar F. Mohammed   +22 more
openaire   +3 more sources

Tuning Defects in a Halide Double Perovskite with Pressure

Journal of the American Chemical Society, 2022
Dopant defects in semiconductors can trap charge carriers or ionize to produce charge carriers─playing a critical role in electronic transport. Halide perovskites are a technologically important semiconductor family with a large pressure response.
Nathan R. Wolf, Adam Jaffe, Adam H. Slavney, Wendy L. Mao, Linn Leppert, Hemamala I. Karunadasa   +5 more
openaire   +2 more sources

Lead-Free Halide Double Perovskite Materials: A New Superstar Toward Green and Stable Optoelectronic Applications

Nano-Micro Letters, 2019
Lead-based halide perovskites have emerged as excellent semiconductors for a broad range of optoelectronic applications, such as photovoltaics, lighting, lasing and photon detection.
Liang Chu, Waqar Ahmad, Wei Liu, Jian Yang, Rui Zhang, Yan Sun, Jianping Yang, Xing’ao Li   +7 more
doaj   +1 more source

Small‐Band‐Gap Halide Double Perovskites

Angewandte Chemie, 2018
AbstractDespite their compositional versatility, most halide double perovskites feature large band gaps. Herein, we describe a strategy for achieving small band gaps in this family of materials. The new double perovskites Cs2AgTlX6 (X=Cl (1) and Br (2)) have direct band gaps of 2.0 and 0.95 eV, respectively, which are approximately 1 eV lower than ...
Adam H. Slavney, Linn Leppert, Abraham Saldivar Valdes, Davide Bartesaghi, Tom J. Savenije, Jeffrey B. Neaton, Hemamala I. Karunadasa   +6 more
openaire   +4 more sources

ERRATUM: Revisiting Duffy's model for Sb3+ and Bi3+ in double halide perovskites: Emergence of a descriptor for machine learning

Optical Materials: X, 2021
The Duffy's model is reformulated for Sb 3+ and Bi 3+ in cubic chloro- and bromoelpasolites with « 0D » perovskite structure. The new equation allows calculating the energy of the first s 2 → s 1 p 1 electron transition from crystal structure data.
Philippe Boutinaud
doaj   +1 more source

Thinning CsPb2Br5 Perovskite Down to Monolayers: Cs-dependent Stability [PDF]

, 2017
Using first-principles density functional theory calculations, we systematically investigate the structural, electronic and vibrational properties of bulk and potential single-layer structures of perovskite-like CsPb2Br5 crystal.
Iyikanat, Fadil, Sahin, Hasan, Sari, Emre   +2 more
core   +17 more sources

Lead-free metal-halide double perovskites: from optoelectronic properties to applications

Nanophotonics, 2020
Lead (Pb) halide perovskites have witnessed highly promising achievements for high-efficiency solar cells, light-emitting diodes (LEDs), and photo/radiation detectors due to their exceptional optoelectronic properties.
Ghasemi Mehri, Hao Mengmeng, Xiao Mu, Chen Peng, He Dongxu, Zhang Yurou, Chen Weijian, Fan Jiandong, Yun Jung H., Jia Baohua, Wen Xiaoming   +10 more
doaj   +1 more source

Stability of the Halide Double Perovskite Cs₂AgInBr₆

The Journal of Physical Chemistry Letters, 2023
Cs2AgInBr6 is among the lead-free halide perovskites of interest, predicted by first-principles calculations to be stable with a direct band gap, but there has been only one report of its synthesis. Herein we report the formation of Cs2AgInBr6 thin films through thermal evaporation of CsBr, AgBr, and InBr3 and subsequent annealing between 130 °C and ...
Yukun Liu, Iver J. Cleveland, Minh N. Tran, Eray S. Aydil   +3 more
openaire   +2 more sources

Organic–inorganic metal halide hybrids beyond perovskites

Materials Research Letters, 2018
Organic–inorganic metal halide hybrids have emerged as new generation functional materials with exceptional structure and property tunability for a variety of applications. Besides the most investigated ABX3 metal halide perovskites, a variety of hybrids
Chenkun Zhou, Haoran Lin, Sujin Lee, Maya Chaaban, Biwu Ma   +4 more
doaj   +1 more source