ProgramMaster Logo
Conference Tools for Materials Science & Technology 2020
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting Materials Science & Technology 2020
Symposium Advances in Synthesis and Integration Methods for Enhanced Properties, and Applications in Emerging Nanomaterials
Presentation Title Polymer Additives for Stable Hybrid Perovskite Solar Cells
Author(s) Chang-Yong Nam
On-Site Speaker (Planned) Chang-Yong Nam
Abstract Scope In this talk, I will discuss a new linear polar polymer additive, polycaprolactone (PCL), that can functionalize grain boundaries (GBs) in methylammonium lead triiodie (MAPbI3) hybrid perovskites via direct backbone attachment, enabling significantly enhanced perovskite solar cell (PSC) performance and environmental stability. The champion PSC with optimal PCL concentration shows a power conversion efficiency (PCE) of 20.1%, which is reduced by only 10% after 400-h, ambient air storage. 500-h continuous thermal aging at 85 °C still preserves ~65% of the initial PCE. The PCL GB passivation is visualized directly via lateral scanning force and transmission electron microscopies, supporting the roles of PCL in suppressing moisture ingression and ion migration. Secondary ion mass spectrometry and ion conduction measurements confirm the PCL GB functionalization significantly retards I- ion migration in MAPbI3 PSCs while without PCL, I- ions spontaneously accumulate at the organic hole transport layer interface even without externally applied electric field.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Critical Elastic Interactions that Govern Effective Mechanical Behavior of Defective hBN and Graphene
Development of High-performance Ion Selective Membranes for Redox Flow Batteries
Efficient Neuromorphic Computing Enabled by Spin-Transfer Torque: Devices, Circuits and Systems
Electrochemical 2D Synapses for Neuromorphic Computing Applications
Ideal Graphene Schottky Junctions: The Building Block for Reconfigurable Logic and 3D Monolithic Integration
Impact of Processing Parameters on Metal Oxide Resistive Random Access Memory (RRAM) Performance and Implications for non-von Neumann Computing Approaches
Influence of Surface Charge on the Photochemical Reactivity of SrTiO3, BaTiO3, and TiO2/BaTiO3 Heterostructured Catalysts
Integration of Synthesis and Computation to Investigate Two-dimensional Transition Metal Chalcogenides: Strain, Defect, and Moiré Engineering
Introduction to Research Capabilities at Center for Functional Nanomaterials, a DOE National User Facility
Investigating the Micro-structure and Transport Mechanisms in Graphene Copper Composites
Iontronic Devices for Energy Efficient Electronics and Neuromorphic Computing
Laser Processing of Soft Magnetic Amorphous and Nanocrystalline Alloys
Low-reflectivity Carbon Nanotube Coatings for Space Applications
Mixed-Dimensional Hetero-structures for Advanced Logic and Memory Devices
Multi-functional Surfaces
Nanoscale Oxide Layers for Halide Perovskite Solar Cells
Polymer Additives for Stable Hybrid Perovskite Solar Cells
Van der Waals and Remote Epitaxy for Quantum Materials Research

Questions about ProgramMaster? Contact programming@programmaster.org