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Title: Non-monotonic effect of growth temperature on carrier collection in SnS solar cells

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4921326· OSTI ID:1547010

We quantify the effects of growth temperature on material and device properties of thermally evaporated SnS thin-films and test structures. Grain size, Hall mobility, and majority-carrier concentration monotonically increase with growth temperature. Yet, the charge collection as measured by the long-wavelength contribution to short-circuit current exhibits a non-monotonic behavior: the collection decreases with increased growth temperature from 150 °C to 240 °C and then recovers at 285 °C. Fits to the experimental internal quantum efficiency using an opto-electronic model indicate that the non-monotonic behavior of charge-carrier collection can be explained by a transition from drift- to diffusion-assisted components of carrier collection. The results reflect a promising increase in the extracted minority-carrier diffusion length at the highest growth temperature of 285 °C. These findings demonstrate how coupled mechanisms can affect early stage device development, highlighting the critical role of direct materials property measurements and simulation.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; National Science Foundation (NSF)
Grant/Contract Number:
EE0005329
OSTI ID:
1547010
Alternate ID(s):
OSTI ID: 1226742
Journal Information:
Applied Physics Letters, Vol. 106, Issue 20; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (3)

Transient terahertz photoconductivity measurements of minority-carrier lifetime in tin sulfide thin films: Advanced metrology for an early stage photovoltaic material journal January 2016
The impact of sodium contamination in tin sulfide thin-film solar cells journal February 2016
Influences of vacancy and doping on electronic and magnetic properties of monolayer SnS journal August 2018

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