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Title: Single Atomically Sharp Lateral Monolayer p-n Heterojunction Solar Cells with Extraordinarily High Power Conversion Efficiency

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [3];  [2];  [2]
  1. King Abdullah Univ. of Science and Technology, Thuwal (King of Saudi Arabia); National Tsing Hua Univ., Taiwan (Republic of China)
  2. King Abdullah Univ. of Science and Technology, Thuwal (King of Saudi Arabia)
  3. National Univ. of Singapore (Singapore)
  4. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
  5. National Tsing Hua Univ., Taiwan (Republic of China)

The recent development of 2D monolayer lateral semiconductor has created new paradigm to develop p-n heterojunctions. Albeit, the growth methods of these heterostructures typically result in alloy structures at the interface, limiting the development for high-efficiency photovoltaic (PV) devices. Here, the PV properties of sequentially grown alloy-free 2D monolayer WSe2-MoS2 lateral p-n heterojunction are explores. The PV devices show an extraordinary power conversion efficiency of 2.56% under AM 1.5G illumination. The large surface active area enables the full exposure of the depletion region, leading to excellent omnidirectional light harvesting characteristic with only 5% reduction of efficiency at incident angles up to 75°. Modeling studies demonstrate the PV devices comply with typical principles, increasing the feasibility for further development. Furthermore, the appropriate electrode-spacing design can lead to environment-independent PV properties. As a result, these robust PV properties deriving from the atomically sharp lateral p-n interface can help develop the next-generation photovoltaics.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1479324
Journal Information:
Advanced Materials, Vol. 29, Issue 32; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 91 works
Citation information provided by
Web of Science

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Cited By (29)

2D Layered Material-Based van der Waals Heterostructures for Optoelectronics journal January 2018
Diverse Atomically Sharp Interfaces and Linear Dichroism of 1T' ReS 2 -ReSe 2 Lateral p-n Heterojunctions journal October 2018
Silicon‐Compatible Photodetectors: Trends to Monolithically Integrate Photosensors with Chip Technology journal February 2019
Versatile Crystal Structures and (Opto)electronic Applications of the 2D Metal Mono‐, Di‐, and Tri‐Chalcogenide Nanosheets journal March 2019
AsP/InSe Van der Waals Tunneling Heterojunctions with Ultrahigh Reverse Rectification Ratio and High Photosensitivity journal January 2019
The Role of Graphene and Other 2D Materials in Solar Photovoltaics journal September 2018
Band Structure Engineering in 2D Materials for Optoelectronic Applications journal September 2018
Recent Progress in 2D Layered III–VI Semiconductors and their Heterostructures for Optoelectronic Device Applications journal May 2019
Novel Optoelectronic Devices: Transition-Metal-Dichalcogenide-Based 2D Heterostructures journal January 2018
Nanoscale Thermal Transport in 2D Nanostructures from Cryogenic to Room Temperature journal August 2019
High-Performance and Low-Temperature Lithium-Sulfur Batteries: Synergism of Thermodynamic and Kinetic Regulation journal March 2018
MXene‐Contacted Silicon Solar Cells with 11.5% Efficiency journal April 2019
Strained 2D Layered Materials and Heterojunctions journal February 2019
Recent Progress on Two‐Dimensional Heterostructures for Catalytic, Optoelectronic, and Energy Applications journal April 2019
Simple One‐Step Fabrication of Semiconductive Lateral Heterostructures Using Bipolar Electrodeposition journal October 2018
Light Confinement Effect Induced Highly Sensitive, Self‐Driven Near‐Infrared Photodetector and Image Sensor Based on Multilayer PdSe 2 /Pyramid Si Heterojunction journal September 2019
2D Photovoltaic Devices: Progress and Prospects journal January 2018
Layer-edge device of two-dimensional hybrid perovskites journal December 2018
Spotting the differences in two-dimensional materials – the Raman scattering perspective journal January 2018
Improving pseudo-van der Waals epitaxy of self-assembled InAs nanowires on graphene via MOCVD parameter space mapping journal January 2019
Designing lateral spintronic devices with giant tunnel magnetoresistance and perfect spin injection efficiency based on transition metal dichalcogenides journal January 2018
Engineering graphene and TMDs based van der Waals heterostructures for photovoltaic and photoelectrochemical solar energy conversion journal January 2018
Molybdenum sulfide–reduced graphene oxide p–n heterojunction nanosheets with anchored oxygen generating manganese dioxide nanoparticles for enhanced photodynamic therapy journal January 2018
Cation exchange synthesis of two-dimensional vertical Cu 2 S/CdS heterojunctions for photovoltaic device applications journal January 2020
Lateral heterostructures and one-dimensional interfaces in 2D transition metal dichalcogenides journal March 2019
Electrostatics of two-dimensional lateral junctions journal May 2018
Nondestructive hole doping enabled photocurrent enhancement of layered tungsten diselenide journal February 2019
Tunable electronic and optical properties of novel ZnSe/AlP van der Waals heterostructure journal April 2019
Atomically thin p-n junctions based on two-dimensional materials text January 2018

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