지원사업
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.
초록· 키워드
오류제보하기
The mechanical properties of halide perovskites play an important role in the design and application of these materials in photovoltaic devices. The data of two elastic constants, C11 and C44, of 14 halide perovskites with respect to lattice constant and the density have been collected and investigated. The C11 showed a decreasing trend with increasing lattice constant, regardless of the type and composition of cations and anions in the perovskites. This indicated that smaller lattice constants are associated with shorter bond lengths on average and thus steeper interatomic potentials. The shear elastic constant C44 showed low values below 4 GPa, with the exception of a few compositions. In particular, the FA-included perovskites had extremely low C44 below 3 GPa. The low shear stiffness seems to be a common feature of halide perovskites, which may be attributed to the pliable octahedral tilting/rotation of the corner-sharing octahedra.
목차
I. INTRODUCTION
II. EXPERIMENTAL
III. RESULTS AND DISCUSSION
IV. CONCLUSION
REFERENCES
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