Publications by authors named "Hiram E Martinez"
Materials (Basel)
February 2020
Article Synopsis
- The study focuses on analyzing the atomic composition of amorphous SiGe:H films created using low-temperature RF plasma discharge.
- Researchers investigated how hydrogen dilution affects the ratios of silicon and germanium in these films and noted variations in germanium content based on different hydrogen levels.
- Findings reveal that lower hydrogen dilution favors silicon atom termination, while higher levels favor germanium termination, with a balanced bond formation occurring at intermediate dilution rates.
Polymers (Basel)
June 2019
Article Synopsis
- This study explores the use of PEDOT:PSS to enhance charge collection in hybrid solar cells when combined with amorphous silicon materials.
- Post-treatment techniques, specifically using isopropyl alcohol, were used to modify the nanostructural characteristics of PEDOT:PSS, improving its interface effectiveness for solar cell applications.
- The developed hybrid solar cells showed higher efficiency and transmittance compared to traditional configurations, positioning PEDOT:PSS as a viable alternative for inorganic p-type layers in solar cells.
Polymers (Basel)
September 2018
Article Synopsis
- Thin-film hybrid organic-inorganic photovoltaic structures were developed using hydrogenated silicon, PEDOT:PSS polymer, and Al-doped ZnO films on flexible substrates.
- The compatibility of these materials and their deposition techniques was validated through morphological and electronic characteristic measurements.
- The best performance was achieved with structures on polyethylene naphthalate (PEN) substrates, showing a short circuit current density of 9.79 mA/cm² and a power conversion efficiency (PCE) of 1.3%.
