Results 31 to 40 of about 547,273 (359)

Formation of tin ore deposits: A reassessment

, 2020
About 85% of all historically mined tin of about 27 million tonnes Sn is from a few tin ore provinces within larger granite belts. These are, in decreasing importance, Southeast Asia (Indonesia, Malaysia, Thailand, Myanmar), South China, the Central ...
B. Lehmann
semanticscholar   +1 more source

Sn(IV)-free tin perovskite films realized by in situ Sn(0) nanoparticle treatment of the precursor solution

Nature Communications, 2020
The toxicity of lead perovskite hampers the commercialization of perovskite-based photovoltaics. While tin perovskite is a promising alternative, the facile oxidation of tin(II) to tin(IV) causes a high density of defects, resulting in lower solar cell ...
Tomoya Nakamura, Shinya Yakumaru, Minh Truong, Kyusun Kim, Jiewei Liu, Shuaifeng Hu, Kento Otsuka, Ruito Hashimoto, R. Murdey, T. Sasamori, H. Kim, Hideo Ohkita, Taketo Handa, Y. Kanemitsu, A. Wakamiya   +14 more
semanticscholar   +1 more source

Indium tin oxide overlayered waveguides for sensor applications [PDF]

, 1997
The use of indium tin oxide (ITO) thin films as electrodes for integrated optical electrochemical sensor devices is discussed. The effect of various thicknesses of ITO overlayers exhibiting low resistivity and high transparency on potassium ion-exchanged
Wilkinson, James S., LUFF J. B., Perrone, Guido, Wilkinson, J.S., Luff, B.Jonathan, WILKINSON J. S., Luff, J.B.   +6 more
core   +1 more source

Mixed tin-lead perovskites with balanced crystallization and oxidation barrier for all-perovskite tandem solar cells

Nature Communications
Mixed tin-lead perovskite solar cells have driven a lot of passion for research because of their vital role in all-perovskite tandem solar cells, which hold the potential for achieving higher efficiencies compared to single-junction counterparts. However,
Jin Zhou, Shiqiang Fu, Shun Zhou, Lishuai Huang, Cheng Wang, Hongling Guan, Dexin Pu, Hongsen Cui, Chen Wang, Ti Wang, Weiwei Meng, Guojia Fang, Weijun Ke   +12 more
semanticscholar   +1 more source

Pyridine Controlled Tin Perovskite Crystallization

ACS Energy Letters, 2022
Controlling the crystallization of perovskite in a thin film is essential in making solar cells. Processing tin-based perovskite films from solution is challenging because of the uncontrollable faster crystallization of tin than the most used lead ...
G. Nasti, M. Aldamasy, M. Flatken, P. Musto, P. Matczak, Andreas Dallmann, A. Hoell, A. Musiienko, H. Hempel, Ece Aktas, D. Di Girolamo, Jorge Pascual, Guixiang Li, Meng Li, L. Mercaldo, P. D. Veneri, A. Abate   +16 more
semanticscholar   +1 more source

Hệ thống hỗ trợ cố vấn học tập trên thiết bị di động

Tạp chí Khoa học Đại học Cần Thơ, 2016
Công tác cố vấn học tập đóng vai trò rất quan trọng trong đào tạo theo học chế tín chỉ, ảnh hưởng rất lớn quá trình học tập và rèn luyện của sinh viên.
Trần Công Án, Phạm Hữu Tài, Phan Tấn Tài, Sơn Búp Pha, Đoàn Hòa Minh, Châu Xuân Phương, Lâm Chí Nguyện   +6 more
doaj   +1 more source

Lead-free organic–inorganic tin halide perovskites for photovoltaic applications

, 2014
Already exhibiting solar to electrical power conversion efficiencies of over 17%, organic–inorganic lead halide perovskite solar cells are one of the most promising emerging contenders in the drive to provide a cheap and clean source of energy.
Nakita K. Noel, S. Stranks, A. Abate, C. Wehrenfennig, S. Guarnera, A. Haghighirad, A. Sadhanala, G. Eperon, Sandeep Kumar Pathak, M. Johnston, A. Petrozza, L. Herz, H. Snaith   +12 more
semanticscholar   +1 more source

Green and Cost-Effective Synthesis of Tin Oxide Nanoparticles: A Review on the Synthesis Methodologies, Mechanism of Formation, and Their Potential Applications

Nanoscale Research Letters, 2021
Nanotechnology has become the most promising area of research with its momentous application in all fields of science. In recent years, tin oxide has received tremendous attention due to its fascinating properties, which have been improved with the ...
Y. Gebreslassie, Henok Gidey Gebretnsae
semanticscholar   +1 more source

A geomecânica da mina da Panasqueira, Portugal

Geotecnia, 1989
Na Mina da Panasqueira, o método de desmonte dos filões de quartzo sub-horizontais variou de frentes corridas com entulhamento parcial para câmaras e pilares.
F. Mello Mendes, A. Correia Sá, J. Ferreira Silva   +2 more
doaj   +1 more source

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source