Yi Tian

ORCID: 0000-0003-0180-7482
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About
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Research Areas
  • Perovskite Materials and Applications
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Concrete and Cement Materials Research
  • X-ray Diffraction in Crystallography
  • Magnetic and transport properties of perovskites and related materials
  • Crystallization and Solubility Studies
  • Catalytic Processes in Materials Science
  • Multiferroics and related materials
  • Advanced Condensed Matter Physics
  • MXene and MAX Phase Materials
  • Diamond and Carbon-based Materials Research
  • Organic Light-Emitting Diodes Research
  • Innovative concrete reinforcement materials
  • Catalysis and Oxidation Reactions
  • 2D Materials and Applications
  • High-pressure geophysics and materials
  • Supercapacitor Materials and Fabrication
  • Boron and Carbon Nanomaterials Research
  • Bone Tissue Engineering Materials
  • Chalcogenide Semiconductor Thin Films
  • Innovations in Concrete and Construction Materials
  • Catalysts for Methane Reforming
  • Advanced materials and composites
  • Magnesium Oxide Properties and Applications

Jiangsu University
2019-2025

Stony Brook University
2004-2024

Sichuan University
2007-2024

Central South University
2023-2024

Chongqing University
2019-2024

Central South University of Forestry and Technology
2024

Guangxi University
2024

Hainan University
2023

Chongqing University of Science and Technology
2014-2023

Tsinghua University
2019-2022

Chemical additive engineering is reported to be a simple yet effective approach passivate shallow defects at the surface and grain boundaries, restrict nonradiative recombination losses, further enhance power conversion efficiency (PCE) stability of perovskite solar cells (PSCs). Herein, we successfully introduce small organic molecule 3,5-bis(trifluoromethyl)benzoic acid (6FBzA) into an antisolvent as defect passivator for films. The Pb2+ are greatly healed due coordination interaction...

10.1021/acsami.1c18035 article EN ACS Applied Materials & Interfaces 2022-01-12

Abstract Hardness is an important indicator of the wear resistance tool materials. The study effect hardness on materials has significant practical applications. In this experimental work, a series polycrystalline cubic boron nitride (PcBN) and diamond (PCD) compacts with different are sintered under high temperature pressure, these samples were fashioned into turning tools, used for edge testing in granite process. Based measurements above, relationship between two identical grain sizes...

10.1111/jace.19839 article EN Journal of the American Ceramic Society 2024-04-29

A novel asymmetric hole transport material is developed for perovskite solar cells, achieving an efficiency of 23.1%.

10.1039/d4cc00004h article EN Chemical Communications 2024-01-01

Structural, mechanical, electronic properties, and stability of boron nitride (BN) in Pnma structure were studied using first-principles calculations by Cambridge Serial Total Energy Package (CASTEP) plane-wave code, the performed with local density approximation generalized gradient form Perdew-Burke-Ernzerhof. This BN, called Pnma-BN, contains four atoms nitrogen buckled through sp³-hybridized bonds an orthorhombic symmetry unit cell Space group Pnma. Pnma-BN is energetically stable,...

10.3390/nano7010003 article EN cc-by Nanomaterials 2016-12-28

The surface and boundary defects present in the perovskite film are reported to be nonradiative recombination degradation centers, restricting further improvement of power conversion efficiency (PCE) long-term stability solar cells. To address this problem, herein, we introduce a fluorine-substituted small molecular material 2FBTA-1 as bifunctional buffer layer efficiently passivate tune energy level alignment between...

10.1021/acsami.0c21975 article EN ACS Applied Materials & Interfaces 2021-03-11

Interfacial defects are considered to be a stumbling block in producing highly efficient perovskite solar cells (PSCs), so more reasonable design is required for interfacial passivation materials (IPMs) achieve further improvements PSC performance. Here, we use fluorine atom (−F) and methoxy (−OCH3) functional groups modify the same molecular fragment, obtaining three kinds of IPMs named YZ-301, YZ-302, YZ-303, respectively. Through subtle combination −F −OCH3, fragment YZ-302 exhibits an...

10.1021/acs.jpclett.4c00881 article EN The Journal of Physical Chemistry Letters 2024-04-25

Abstract A profitable approach for improving the stability of n‐i‐p planar perovskite solar cell (PSC) is developing dopant‐free hole transport materials (HTMs) with desirable intrinsic charge properties. In this work, by adopting a metal‐free catalytic intramolecular C─C coupling reaction, carbazole dimer‐based fused‐ring synthesized, and further developed small molecular HTM abbreviated as NCz‐DM appropriate energy level, excellent film formation Applied in PSC, an impressive power...

10.1002/adfm.202408423 article EN Advanced Functional Materials 2024-09-09

Azulene has been attracting much attention as a charge transfer material in organic electronics due to its inherent large dipole moment and small band gap, but application perovskite solar cells (PSCs) is very limited. Herein, azulene was applied the core acceptor for hole transport materials (HTMs), two molecules named Azu-Py-DF Azu-Py-OMeTPA were designed synthesized, which 4-pyridyl introduced on 6-position of 1,3-substituted adjust energy levels. The different spatial orientations...

10.3390/ma18071400 article EN Materials 2025-03-21
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