Chemical vapor deposition grown formamidinium perovskite solar modules with high steady state power and thermal stability
Yan Jiang a, Yabing Qi a, Matthew Leyden a
a OIST, 1919-1 Tancha, Onna-son, Okinawa, 904, Japan
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Yokohama-shi, Japan, 2017 February 2nd - 4th
Organizers: Tsutomu Miyasaka and Iván Mora-Seró
Poster, Matthew Leyden, 032
Publication date: 7th November 2016

Metal organic halide perovskites are promising materials for solar cells with a maximum certified efficiency of 22.1%. However, there are only a handful of reports on larger area modules, where efficiencies drop with increased use of active area. Chemical vapor deposition (CVD) is a technology used in many industrial applications demonstrating potential for scale up. We used a CVD process to fabricate solar cells and larger multi cell modules, and investigated scaling issues. In addition, we fabricated modules using an established MAPbI3 solution process and compared them to CVD grown modules. The solution processed cells performed better than CVD cells when comparing PCEs determined from J-V measurements, but the steady state power of solution processed solar cells decreased quickly with increased area. In contrast, FAPbI3 CVD grown solar modules maintained much of their PCEs transitioning from J-V measurements to the steady state operating conditions, suggesting that the FAI based CVD process may outperform MAI based solution processed modules when scaled up to practical sizes. [1] 

[1]       Matthew R. Leyden, Yan Jiang, Yabing Qi*, "Chemical vapor deposition grown formamidinium perovskite solar modules with high steady state power and thermal stability" J. Mater. Chem. A 4, 13125 - 13132 (2016). 

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