자료유형  

 학위논문

Control Number  

0017163008

International Standard Book Number  

9798384463801

Dewey Decimal Classification Number  

621.3

Main Entry-Personal Name  

Xu, Zhaojian.

Publication, Distribution, etc. (Imprint  

[S.l.] : Princeton University., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

147 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-04, Section: B.

General Note  

Advisor: Rand, Barry P.

Dissertation Note  

Thesis (Ph.D.)--Princeton University, 2024.

Summary, Etc.  

요약Metal halide perovskites, owing to their straightforward bandgap tuning through variations in halide stoichiometry, have demonstrated significant potential in various optoelectronic devices. However, unwanted halide segregation under operational conditions, such as light illumination and voltage bias, limits practical applications, and the underlying mechanisms still require in-depth investigation. In this thesis, we experimentally explore both voltage-induced and light-induced halide segregation to uncover the photoelectrochemical origins of this phenomenon. We start with an examination of voltage-induced halide segregation and study the impact of voltage bias on halide perovskite devices. Through conducting a series of prolonged voltage biasing tests, complemented by extensive characterization techniques, we identify various voltage thresholds in mixed-halide perovskite devices and directly visualize the voltage-induced halide redistribution. Furthermore, we show that monolithic perovskite/silicon tandem solar cells exhibit superior reverse-bias resilience compared to perovskite single-junction devices, positioning them at a higher technology readiness level for addressing the challenge of partial shading. Lastly, we delve into light-induced halide segregation and examine the effect of organic hole transport layers (HTLs) on the photoluminescence behavior at perovskite/organic HTL interfaces. We demonstrate that the highest occupied molecular orbital energy of the HTL influences the reactivity of the I2/HTL redox reaction, halogen diffusion, and light-induced halide segregation at these interfaces. Our findings offer new insights into a variety of voltage-induced and light-induced instabilities in halide perovskite materials and devices from a photoelectrochemical standpoint, guiding the development of perovskite-based optoelectronic devices towards stable operation.

Subject Added Entry-Topical Term  

Electrical engineering.

Subject Added Entry-Topical Term  

Materials science.

Subject Added Entry-Topical Term  

Energy.

Subject Added Entry-Topical Term  

Chemical engineering.

Index Term-Uncontrolled  

Halide segregation

Index Term-Uncontrolled  

Metal halide perovskites

Index Term-Uncontrolled  

Photoelectrochemical degradation

Index Term-Uncontrolled  

Halide stoichiometry

Index Term-Uncontrolled  

Silicon tandem

Added Entry-Corporate Name  

Princeton University Electrical and Computer Engineering

Host Item Entry  

Dissertations Abstracts International. 86-04B.

Electronic Location and Access  

로그인을 한후 보실 수 있는 자료입니다.

Control Number  

joongbu:657685