[논문]진공 열 증착 기반의 정공수송층 적용을 통한 페로브스카이트 태양전지

김혜승; 송명훈

doi:10.21218/cpr.2022.10.1.023

진공 열 증착 기반의 정공수송층 적용을 통한 페로브스카이트 태양전지
Perovskite Solar Cells through Application of Hole Transporting Layers based on Vacuum Thermal Evaporation 원문보기

Current photovoltaic research = 한국태양광발전학회논문지, v.10 no.1, 2022년, pp.23 - 27

김혜승 (신소재공학과, 울산과학기술원) , 송명훈 (신소재공학과, 울산과학기술원)

Abstract ▼ AI-Helper

In this study, we investigate organic-inorganic halide perovskite solar cells with a vacuum thermal evaporated hole transporting layer (NPB/MoO3-x). By replacing solution process based Spiro-MeOTAD with vacuum thermal evaporation based NPB/MoO3-x, a thin hole transporting layer was implemented. In addition, parasitic absorption that may occur during the doping process was eliminated by excluding solution process doping. In a solar cell with a thin vacuum thermal evaporated hole transporting layer, the short-circuit current density (Jsc) increased to 23.93 mA/cm2, resulting in the highest power converstion efficiency (PCE) at 18.76%. Considering these results, it is essential to control the thickness of hole transporting layer located at the top in solar cell configuration.

주제어

표/그림 (7)

그림 Fig. 1. Schematics of (a) interface doping and (b) energy alignment and band bending at the interface of NPB/MoO_3-x HTL, E_c(E_v) indicates the edge of the conduction (valence) band while E_f denote the Fermi level
그림 Fig. 2. J-V curves of NPB/MoO_3-x based perovskite solar cells depending on NPB thickness under AM 1.5G illumination
그림 Fig. 3. Transmittance spectra of Spiro-MeOTAD, NPB films deposited on glass
그림 Fig. 4. Cross-section SEM images of (a) Spiro-MeOTAD and (b) NPB/MoO_3-x based PeSCs and AFM images of (a) Spiro-MeOTAD and (b) NPB on perovskite surface, respectively
그림 Fig. 5. Statistical analysis of (a) Jsc, (b) Voc, (c) FF, and (d) PCE for solution processed Spiro-MeOTAD and vacuum thermal evaporated NBP/MoO_3-x based devices (black : Spiro-MeOTAD, red : NPB/MoO_3-x)
그림 Fig. 6. (a) J-V curves of solution processed Spiro-MeOTAD and vacuum thermal evaporated NPB/MoO_3-x based devices under AM 1.5G illumination and (b) EQE spectras of Spiro-MeOTAD and vacuum thermal evaporated NPB/MoO_3-x based PeSCs
표 Table 1. Summary of champion photovoltaic parameters of PeSCs depending on HTL (BS:Backward Scan, FS: Forward Scan, Scan rate: 100 mV/sec)

참고문헌 (23)

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