Optical spectroscopy of two-dimensional layered $(C_{6}H_{5}C_{2}H_{4}-NH_{3})_{2}-PbI_{4}$ perovskite

We report on optical spectroscopy (photoluminescence and photoluminescence excitation) on two-dimensional self-organized layers of $(C_{6} H_{5} C_{2} H_{4} - N H_{3})_{2} P b I_{4}$ perovskite. Temperature and excitation power dependance of the optical spectra gives a new insight into the excitonic and phononic properties of this hybrid organic/inorganic semiconductor. In particular, exciton-phonon interaction is found to be more than one order of magnitude higher than in GaAs QWs. As a result, photoluminescence emission lines have to be interpreted in the framework of a polaron model.

Optical spectroscopy of two-dimensional layered $(C_{6} H_{5} C_{2} H_{4} - N H_{3})_{2} - P b I_{4}$ perovskite

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Optical spectroscopy of two-dimensional layered $(C_{6} H_{5} C_{2} H_{4} - N H_{3})_{2} - P b I_{4}$ perovskite

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Optical spectroscopy of two-dimensional layered (C6H5C2H4−NH3)2−PbI4(C6​H5​C2​H4​−NH3​)2​−PbI4​ perovskite

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Optical spectroscopy of two-dimensional layered (C6H5C2H4−NH3)2−PbI4(C6​H5​C2​H4​−NH3​)2​−PbI4​ perovskite

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Optical spectroscopy of two-dimensional layered $(C_{6} H_{5} C_{2} H_{4} - N H_{3})_{2} - P b I_{4}$ perovskite

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Optical spectroscopy of two-dimensional layered $(C_{6} H_{5} C_{2} H_{4} - N H_{3})_{2} - P b I_{4}$ perovskite

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AI智能校验