Encapsulating perovskite solar cells to withstand damp heat and thermal cycling
- 1 November 2018
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Sustainable Energy & Fuels
- Vol. 2 (11), 2398-2406
- https://doi.org/10.1039/c8se00250a
Abstract
Perovskite solar cells (PSCs) are highly promising, but they are mechanically fragile, composed of layers with mismatches in thermal expansion coefficients, and known to decompose in the presence of heat and moisture. Here we show the development of a glass-glass encapsulation methodology for PSCs that enables them to pass the industry standard IEC 61646 damp heat and thermal cycling tests. It is important to select a thermally stable perovskite composition to withstand the encapsulation process at 150 degrees C and design a cell that minimizes metal diffusion. Moreover, the package needs an edge seal to effectively prevent moisture ingress and an inert encapsulant with an appropriate elastic modulus to hold the package together while allowing for compliance during temperature fluctuations. Our work demonstrates that industrially relevant encapsulation techniques have the potential to enable the commercial viability of PSCs.Funding Information
- U.S. Department of Energy (DE-EE0008154)
- Office of Naval Research (N00014-17-1-2525)
- National Science Foundation (DGE – 1656518, ECCS-1542152)
- Ministry of Science and Technology of Thailand
This publication has 35 references indexed in Scilit:
- Degradation observations of encapsulated planar CH3NH3PbI3 perovskite solar cells at high temperatures and humidityJournal of Materials Chemistry A, 2015
- Investigation of CH3NH3PbI3 Degradation Rates and Mechanisms in Controlled Humidity Environments Using in Situ TechniquesACS Nano, 2015
- Remnant PbI2, an unforeseen necessity in high-efficiency hybrid perovskite-based solar cells?APL Materials, 2014
- Modeling moisture ingress through polyisobutylene‐based edge‐sealsProgress In Photovoltaics, 2014
- Evaluation of moisture ingress from the perimeter of photovoltaic modulesProgress In Photovoltaics, 2013
- Thermal Stress and Strain of Solar Cells in Photovoltaic ModulesPublished by Springer Science and Business Media LLC ,2011
- Acetic acid production and glass transition concerns with ethylene-vinyl acetate used in photovoltaic devicesSolar Energy Materials and Solar Cells, 2007
- Accurate Measurement and Characterization of Organic Solar CellsAdvanced Functional Materials, 2006
- An improved experimental determination of external photoluminescence quantum efficiencyAdvanced Materials, 1997
- Low-cost encapsulation materials for terrestrial solar cell modulesSolar Energy, 1979