In this study, the experimentally measured J-V curve from [21] is used due to the similar device configuration. The calculated R s and R sh are 10 and 2,800 Ω · cm2, respectively. From the illustration, performance parameters like maximum output power density (P max), V oc, fill factor [FF = P max/(J scVoc)], and {Selleck Anti-infection Compound Library|Selleck Antiinfection Compound Library|Selleck Anti-infection Compound Library|Selleck Antiinfection Compound Library|Selleckchem Anti-infection Compound Library|Selleckchem Antiinfection Compound Library|Selleckchem Anti-infection Compound Library|Selleckchem Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|Anti-infection Compound Library|Antiinfection Compound Library|buy Anti-infection Compound Library|Anti-infection Compound Library ic50|Anti-infection Compound Library price|Anti-infection Compound Library cost|Anti-infection Compound Library solubility dmso|Anti-infection Compound Library purchase|Anti-infection Compound Library manufacturer|Anti-infection Compound Library research buy|Anti-infection Compound Library order|Anti-infection Compound Library mouse|Anti-infection Compound Library chemical structure|Anti-infection Compound Library mw|Anti-infection Compound Library molecular weight|Anti-infection Compound Library datasheet|Anti-infection Compound Library supplier|Anti-infection Compound Library in vitro|Anti-infection Compound Library cell line|Anti-infection Compound Library concentration|Anti-infection Compound Library nmr|Anti-infection Compound Library in vivo|Anti-infection Compound Library clinical trial|Anti-infection Compound Library cell assay|Anti-infection Compound Library screening|Anti-infection Compound Library high throughput|buy Antiinfection Compound Library|Antiinfection Compound Library ic50|Antiinfection Compound Library price|Antiinfection Compound Library cost|Antiinfection Compound Library solubility dmso|Antiinfection Compound Library purchase|Antiinfection Compound Library manufacturer|Antiinfection Compound Library research buy|Antiinfection Compound Library order|Antiinfection Compound Library chemical structure|Antiinfection Compound Library datasheet|Antiinfection Compound Library supplier|Antiinfection Compound Library in vitro|Antiinfection Compound Library cell line|Antiinfection Compound Library concentration|Antiinfection Compound Library clinical trial|Antiinfection Compound Library cell assay|Antiinfection Compound Library screening|Antiinfection Compound Library high throughput|Anti-infection Compound high throughput screening| η can be obtained. It is found
that the tandem configuration can achieve a much higher V oc approximately 1.5 V, which does not change much under various light-trapping designs. However, J sc shows great increase under the optimal 2D photonic crystal design, leading to a much higher P max. Under a FF approximately 66.75%, η = 12.67% is predicated with an enhancement ratio NVP-BSK805 mw of 27.72% compared to the reference. Figure 4 J – V characteristic
of the a-Si:H top cell, μc-Si:H bottom cell, and a-Si:H/μc-Si:H tandem cell. Power densities versus V are also inserted for the designed tandem cell and reference cell. Conclusions a-Si:H/μc-Si:H tandem TFSCs with improved absorption and light-conversion efficiency are presented in this paper. Full-wave electromagnetic and detailed carrier transport calculations are used for a thorough design on the optical and electrical performance of the nanostructured tandem SCs. The maximized photocurrent matched between two junctions is realized by two-dimensionally nanopatterning a-Si:H top junction into 2D photonic crystal and introducing an optimized intermediate layer between the junctions. Considering both optical and electrical
TCL perspectives, a tandem cell with a relative increase of 35% (27.72%) in J sc (η) can be achieved under the optimized photonic design. Compared to conventional tandem cell in 1D nanopattern, the proposed system exhibits an improved light absorbing and conversion capability due to the better confinement to the solar incidence under strong diffraction and waveguiding effects, and therefore it is believed to be a promising way of realizing high-efficiency tandem TFSCs. Finally, we would like to indicate that the designed system is with typical 2D grating structure, which has been extensively used in various optoelectronic fields and can therefore be fabricated by standard nanofabrication methods, including optical (sometimes electrical) lithography, nanoimprinting, or laser holographic Vorinostat research buy lithography [22, 23]. The fabrication of a-Si:H/μc-Si:H tandem TFSC can be found from literatures (e.g., [24]). Acknowledgements This work is supported by the National Natural Science Foundation of China (No. 91233119, No. 61204066), Ph.D. Programs Foundation of Ministry of Education of China (No. 20133201110021), ‘1000 Young Experts Plan’ of China, and Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions. References 1. Callahan DM, Munday JN, Atwater HA: Solar cell light trapping beyond the ray optic limit. Nano Lett 2012, 12:214–218.CrossRef 2.