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Research Spending & Results

Award Detail

Awardee:UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Doing Business As Name:University of North Carolina at Chapel Hill
PD/PI:
  • Jinsong Huang
  • (919) 445-1107
  • jhuang@unc.edu
Award Date:11/30/2017
Estimated Total Award Amount: $ 302,880
Funds Obligated to Date: $ 302,880
  • FY 2016=$139,186
  • FY 2017=$163,694
Start Date:09/01/2017
End Date:06/30/2019
Transaction Type:Grant
Agency:NSF
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.049
Primary Program Source:040100 NSF RESEARCH & RELATED ACTIVIT
Award Title or Description:Combined Macroscopic and Nanoscopic Studies of the Photovoltaic Behavior of Organic Perovskite Materials
Federal Award ID Number:1801741
DUNS ID:608195277
Parent DUNS ID:142363428
Program:ELECTRONIC/PHOTONIC MATERIALS
Program Officer:
  • Tania M. Paskova
  • (703) 292-2264
  • tpaskova@nsf.gov

Awardee Location

Street:104 AIRPORT DR STE 2200
City:CHAPEL HILL
State:NC
ZIP:27599-1350
County:Chapel Hill
Country:US
Awardee Cong. District:04

Primary Place of Performance

Organization Name:University of North Carolina at Chapel Hill
Street:104 Airport Drive
City:Chapel Hill
State:NC
ZIP:27599-1350
County:Chapel Hill
Country:US
Cong. District:04

Abstract at Time of Award

Non-technical Description: Development of cost-effective photovoltaic cells is one of the long-term, clean energy solutions for clean energy, air pollution, and energy security. An ideal strategy is to achieve efficient photovoltaic cells via depositing a naturally abundant active layer using a low-cost, low-temperature process. Organic perovskites are emerging as photovoltaic materials characterized by their excellent crystallinity, large optical extinction coefficient, and a suitable bandgap. In the last several years, the organic perovskite-based photovoltaic devices have experienced a faster increase in efficiency than any other solar cell technology. However, the basic understanding on the mechanisms of the photovoltaic behavior of organic perovskites is still in its infancy. This project explores the fundamental mechanisms with the ultimate goal to process organic perovskite materials with superior physicochemical properties for solar cell applications, and thus contributes to the technological development of renewable energy sources. The educational activities are well integrated with the research including: (1) promoting research training and teaching in nanoscience and clean energy technology for graduates and undergraduate students; (2) involving K-12 student and Nebraska residents through open-to-the-public events, such as 'Sunday with a Scientist' and 'Nanocamp'. Technical Description: The goal of this project is to investigate, at both the macro- and nanoscopic levels, two of the most important fundamental aspects related to the physical mechanisms of photovoltaic behavior of the organolead trihalide perovskite materials: (1) the role of chlorine (Cl) concentration in enhancing the photovoltaic behavior through the increased carrier diffusion length, and (2) the origin of the switchable photovoltaic effect. This project builds upon the principal investigator's expertise on stable high-quality crystalline perovskite films and high-efficiency perovskite solar cell devices, control of preferential grain orientation by Cl incorporation, and the switchable photovoltaic effect. Scanning probe microscopy (including conducting atomic force microscopy, piezoresponse force microscopy and Kelvin probe force microscopy) and macroscopic testing techniques (such as transient photovoltage, transient photocurrent, impedance spectroscopy, steady photocurrent and dark-current measurements) are used to investigate the effect of grain size and orientation on charge generation, transport, and recombination in perovskite thin films and devices. A combination of nanoscale studies of perovskite solar cells provides information critically important for understanding the underlying physical mechanism of the photovoltaic effect and enhancement of the functionalities of the perovskite-based solar cell devices.

Publications Produced as a Result of this Research

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Yun Lin, Yang Bai, Yanjun Fang, Qi Wang, Yehao Deng and Jinsong Huang "Suppressed Ion Migration in Low Dimensional Perovskites" ACS Energy Lett.,, v., 2017, p..

Wu-Qiang Wu, Qi Wang, Yanjun Fang, Yuchuan Shao, Shi Tang, Yehao Deng, Haidong Lu, Ye Liu, Tao Li, Zhibin Yang, Alexei Gruverman, Jinsong Huang "Molecular Doping Enabled Scalable Blading of Efficient Hole-Transport-Layer-free Perovskite Solar Cells" Nat. Commun, v., 2018, p..

Wei Wei, Yang Zhang, Qiang Xu, Haotong Wei, Yanjun Fang, Qi Wang, Yehao Deng, Tao Li, Alexei Gruverman, Lei Cao and Jinsong Huang "Monolithic Integration of Hybrid Perovskite Single Crystals with Heterogenous Substrate for Highly Sensitive X-ray Imaging" Nat. Photonics, v., 2017, p..

Jinsong Huang*, Yongbo Yuan, Yuchuan Shao and Yanfa Yan "Advance in Understanding the Physical Properties of Hybrid Perovskites for Photovoltaic Applications" Nat. Rev. Mater., v., 2017, p..

Garrett, Joseph, Tennyson, Elizabeth, Hu, Miao, Huang, Jinsong, Munday, Jeremy, Leite, Marina* "Real-time nanoscale open-circuit voltage dynamics of perovskite solar cells" Nano Lett., v., 2017, p..

Evgheni Strelcov, Qingfeng Dong, Tao Li, Jungseok Chae, Yuchuan Shao, Yehao Deng, Alexei Gruveman*, Jinsong Huang*, and Andrea Centrone*, "Ferroelasticity Revealed in CH3NH3PbI3 Perovskites" Sci. Adv.,, v., 2017, p..

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