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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.12
- 수록면
- 514 - 518 (5page)
이용수
초록· 키워드
오류제보하기
Carrier diffusion length in the light-sensitive material is one of the key elements in improving the light-current conversion efficiency of solar-cell devices. In this paper, we measured the carrier diffusion length in lead-halide perovskite (MAPbI<SUB>3</SUB>) and mixed lead-halide (MAPbI<SUB>3-x</SUB>Cl<SUB>x</SUB>) perovskite devices using scanning photocurrent microscopy (SPCM). The SPCM signal decreased as we moved the focused laser spot away from the metal contact. By fitting the data with a simple exponential curve, we extracted the carrier diffusion length of each perovskite film. Importantly, the diffusion length of the mixed-halide perovskite was higher than that of the halide perovskite film by a factor of 3 to 6; this is consistent with the general expectation that the carrier mobility will be higher in the case of the mixed lead-halide perovskites. Finally, the diffusion length was investigated as a function of applied bias for both samples, and analyzed successfully in terms of the drift-diffusion model.
목차
I. INTRODUCTION
II. RESULTS AND DISCUSSION
III. CONCLUSION
REFERENCES
참고문헌 (27)
참고문헌 신청
L. M. Herz / 2017 / Charge-carrier mobilities in metal halide perovskites: fundamental mechanisms and limits / ACS Energy Lett 2:1539~1548
S. D. Stranks / 2013 / Electron-hole diffusion lengths exceeding 1micrometer in an organometal trihalide perovskite absorber / Science 342:341~344
Q. Dong / 2015 / Electron-hole diffusion lengths >175 μm in solution-grown CH3NH3PbI3 single crystals / Science 347:967~970
H. J. Snaith / 2013 / Perovskites: The emergence of a new era for low-cost, high-efficiency solar cells / J. Phys. Chem. Lett 4:3623~3630
M. A. Green / 2014 / The emergence of perovskite solar cells / Nat. Photon 8:506~514
S. D. Stranks / 2013 / Electron-hole diffusion lengths exceeding 1micrometer in an organometal trihalide perovskite absorber / Science 342:341~344
Q. Dong / 2015 / Electron-hole diffusion lengths >175 μm in solution-grown CH3NH3PbI3 single crystals / Science 347:967~970
H. J. Snaith / 2013 / Perovskites: The emergence of a new era for low-cost, high-efficiency solar cells / J. Phys. Chem. Lett 4:3623~3630
M. A. Green / 2014 / The emergence of perovskite solar cells / Nat. Photon 8:506~514
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