Details

Autor(en) / Beteiligte

• Zhang, Xu
• Liu, Jiang
• Song, Zhen
• Zuo, Wentao
• Fan, Zhengfang
• He, Xulin
• Luo, Kun
• Ye, Qinyan
• Liao, Cheng

Titel

Tuning Bandgap of Mixed‐Halide Perovskite for Improved Photovoltaic Performance Under Monochromatic‐Light Illumination

Ist Teil von

• Physica status solidi. A, Applications and materials science, 2019-02, Vol.216 (4), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2019

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• Organic–inorganic halide perovskites have emerged as promising materials for optoelectronic devices. This paper focuses on a new application field for perovskite materials as monochromatic‐light conversion devices. First the optical properties of organic–inorganic perovskite semiconductors with bandgaps varying from near‐infrared to visible at room temperature are presented. Two types of hybrid organic–inorganic mixed‐halide perovskites, (FAPbI3)x(MAPbBr3)1‐x and FA0.85MA0.15Pb(IxBr1‐x)3, are adopted for bandgap tuning, an approximate linear variation of bandgaps with the x value is obtained. The relationship between thin film composition and device performance are investigated. Based on the results of the above bandgap tuning, two kinds of devices with bandgap near the wavelength of 683 nm are characterized under monochromatic‐light illumination. A conversion efficiency of up to 40% under 60 mW cm−2 monochromatic‐light illumination is achieved. The results confirm that the perovskite films exhibit sharp optical absorption edge, enabling highly efficient monochromatic‐light conversion device. In this work, the photovoltaic performance of perovskite laser cells under monochromatic‐light illumination is studied. Tuning bandgap of hybrid mixed‐halide perovskite materials for matching with the specific laser wavelength, are finally obtained a best PCE of up to 40% for FA0.85MA0.15Pb(I0.9Br0.1)3 perovskite laser cells under 60 mW cm−2 683 nm laser illumination.